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Volumn 59, Issue 3, 2003, Pages 311-324

The total synthesis of (±)-arisugacin A

Author keywords

Arisugacin A; Formal 3+3 cycloaddition; Iminium salts; Retro aldol aldol sequence; Stereoselective pericyclic ring closure

Indexed keywords

1 OXATRIENE; ALKENE DERIVATIVE; ARISUGACIN A; CHOLINESTERASE INHIBITOR; PYRONE DERIVATIVE; UNCLASSIFIED DRUG;

EID: 0037434033     PISSN: 00404020     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-4020(02)01524-7     Document Type: Article
Times cited : (45)

References (59)
  • 1
    • 0029080503 scopus 로고
    • (a) Õmura S., Kuno F., Otoguro K., Sunazuka T., Shiomi K., Masuma R., Iwai Y. J. Antibiotics. 48:1995;745. For biological activities of arisugacin see: (b) Kuno F., Otoguro K., Shiomi K., Iwai Y., Õmura S. J. Antibiotics. 49:1996;742 (c) Otoguro K., Kuno F., Õmura S. Pharmacol. Ther. 76:1997;45 (d) Otoguro K., Shiomi K., Yamaguchi Y., Arai N., Sunazuka T., Masuma R., Iwai Y., Õmura S. J. Antibiotics. 53:2000;50.
    • (1995) J. Antibiotics , vol.48 , pp. 745
    • Õmura, S.1    Kuno, F.2    Otoguro, K.3    Sunazuka, T.4    Shiomi, K.5    Masuma, R.6    Iwai, Y.7
  • 2
    • 0029793496 scopus 로고    scopus 로고
    • (a) Õmura S., Kuno F., Otoguro K., Sunazuka T., Shiomi K., Masuma R., Iwai Y. J. Antibiotics. 48:1995;745. For biological activities of arisugacin see: (b) Kuno F., Otoguro K., Shiomi K., Iwai Y., Õmura S. J. Antibiotics. 49:1996;742 (c) Otoguro K., Kuno F., Õmura S. Pharmacol. Ther. 76:1997;45 (d) Otoguro K., Shiomi K., Yamaguchi Y., Arai N., Sunazuka T., Masuma R., Iwai Y., Õmura S. J. Antibiotics. 53:2000;50.
    • (1996) J. Antibiotics , vol.49 , pp. 742
    • Kuno, F.1    Otoguro, K.2    Shiomi, K.3    Iwai, Y.4    Õmura, S.5
  • 3
    • 0031277576 scopus 로고    scopus 로고
    • (a) Õmura S., Kuno F., Otoguro K., Sunazuka T., Shiomi K., Masuma R., Iwai Y. J. Antibiotics. 48:1995;745. For biological activities of arisugacin see: (b) Kuno F., Otoguro K., Shiomi K., Iwai Y., Õmura S. J. Antibiotics. 49:1996;742 (c) Otoguro K., Kuno F., Õmura S. Pharmacol. Ther. 76:1997;45 (d) Otoguro K., Shiomi K., Yamaguchi Y., Arai N., Sunazuka T., Masuma R., Iwai Y., Õmura S. J. Antibiotics. 53:2000;50.
    • (1997) Pharmacol. Ther. , vol.76 , pp. 45
    • Otoguro, K.1    Kuno, F.2    Õmura, S.3
  • 4
    • 0033960475 scopus 로고    scopus 로고
    • For biological activities of arisugacin see: (b)
    • (a) Õmura S., Kuno F., Otoguro K., Sunazuka T., Shiomi K., Masuma R., Iwai Y. J. Antibiotics. 48:1995;745. For biological activities of arisugacin see: (b) Kuno F., Otoguro K., Shiomi K., Iwai Y., Õmura S. J. Antibiotics. 49:1996;742 (c) Otoguro K., Kuno F., Õmura S. Pharmacol. Ther. 76:1997;45 (d) Otoguro K., Shiomi K., Yamaguchi Y., Arai N., Sunazuka T., Masuma R., Iwai Y., Õmura S. J. Antibiotics. 53:2000;50.
    • (2000) J. Antibiotics , vol.53 , pp. 50
    • Otoguro, K.1    Shiomi, K.2    Yamaguchi, Y.3    Arai, N.4    Sunazuka, T.5    Masuma, R.6    Iwai, Y.7    Õmura, S.8
  • 12
    • 0000554446 scopus 로고    scopus 로고
    • For a 4-pyrone Diels-Alder approach to arisugacin A, see: (a) Hsung R.P. J. Org. Chem. 62:1997;7904 (b) Granum K.A., Merkel G., Mulder J.A., Debbins S.A., Hsung R.P. Tetrahedron Lett. 39:1998;9597.
    • (1997) J. Org. Chem. , vol.62 , pp. 7904
    • Hsung, R.P.1
  • 13
    • 0032564539 scopus 로고    scopus 로고
    • For a 4-pyrone Diels-Alder approach to arisugacin A, see: (a)
    • For a 4-pyrone Diels-Alder approach to arisugacin A, see: (a) Hsung R.P. J. Org. Chem. 62:1997;7904 (b) Granum K.A., Merkel G., Mulder J.A., Debbins S.A., Hsung R.P. Tetrahedron Lett. 39:1998;9597.
    • (1998) Tetrahedron Lett. , vol.39 , pp. 9597
    • Granum, K.A.1    Merkel, G.2    Mulder, J.A.3    Debbins, S.A.4    Hsung, R.P.5
  • 14
    • 0034681738 scopus 로고    scopus 로고
    • For an acid condensation approach to arisugacin A, see
    • For an acid condensation approach to arisugacin A, see: Zehnder L.R., Dahl J.W., Hsung R.P. Tetrahedron Lett. 41:2000;1901.
    • (2000) Tetrahedron Lett. , vol.41 , pp. 1901
    • Zehnder, L.R.1    Dahl, J.W.2    Hsung, R.P.3
  • 17
    • 0033525090 scopus 로고    scopus 로고
    • (a) For preliminary communications on the formal [3+3] cycloaddition approach, see: (a) Shen, H. C.; Degen, S. J.; Mulder, J. A.; Hsung, R. P.; Douglas C. J.; Golding, G. M.; Johnson, E. W.; Mathias, D. S.; Morgan, C. D.; Mueller, K. L.; Shih, R. A., Abstract No. ORGN-664, 216th ACS National Meeting, Boston, MA, Fall, 1998. (b) Hsung R.P., Shen H.C., Douglas C.J., Morgan C.D., Degen S.J., Yao L.J. J. Org. Chem. 64:1999;690.
    • (1999) J. Org. Chem. , vol.64 , pp. 690
    • Hsung, R.P.1    Shen, H.C.2    Douglas, C.J.3    Morgan, C.D.4    Degen, S.J.5    Yao, L.J.6
  • 20
    • 0030052605 scopus 로고    scopus 로고
    • For two key accounts predated our studies: (a)
    • For two key accounts predated our studies: (a) Hua D.H., Chen Y., Sin H.-S., Maroto M.J., Robinson P.D., Newell S.W., Perchellet E.M., Ladesich J.B., Freeman J.A., Perchellet J.-P., Chiang P.K. J. Org. Chem. 62:1997;6888 (b) Jonassohn M., Sterner O., Anke H. Tetrahedron. 52:1996;1473.
    • (1996) Tetrahedron , vol.52 , pp. 1473
    • Jonassohn, M.1    Sterner, O.2    Anke, H.3
  • 21
    • 0035148519 scopus 로고    scopus 로고
    • For related studies, see: (a) Cravotto G., Nano G.M., Tagliapietra S. Synthesis. 2001;49 (b) Hua D.H., Chen Y., Sin H.-S., Robinson P.D., Meyers C.Y., Perchellet E.M., Perchellet J.-P., Chiang P.K., Biellmann J.-P. Acta Crystallogr. C55:1999;1698 (c) Krasnaya Z.A., Bogdanov V.S., Burova S.A., Smirnova Y.V. Russ. Chem. 44:1995;2118 (d) Heber D., Berghaus T. J. Heterocycl. Chem. 31:1994;1353 (e) Appendino G., Cravotto G., Tagliapietra S., Nano G.M., Palmisano G. Helv. Chim. Acta. 73:1990;1865 (f) Schuda P.F., Price W.A. J. Org. Chem. 52:1987;1972 (g) de March P., Moreno-Mañas M., Casado J., Pleixats R., Roca J.L., Trius A. J. Heterocycl. Chem. 21:1984;85. see also 1369.
    • (2001) Synthesis , pp. 49
    • Cravotto, G.1    Nano, G.M.2    Tagliapietra, S.3
  • 22
    • 0001327019 scopus 로고    scopus 로고
    • For related studies, see: (a) Cravotto G., Nano G.M., Tagliapietra S. Synthesis. 2001;49 (b) Hua D.H., Chen Y., Sin H.-S., Robinson P.D., Meyers C.Y., Perchellet E.M., Perchellet J.-P., Chiang P.K., Biellmann J.-P. Acta Crystallogr. C55:1999;1698 (c) Krasnaya Z.A., Bogdanov V.S., Burova S.A., Smirnova Y.V. Russ. Chem. 44:1995;2118 (d) Heber D., Berghaus T. J. Heterocycl. Chem. 31:1994;1353 (e) Appendino G., Cravotto G., Tagliapietra S., Nano G.M., Palmisano G. Helv. Chim. Acta. 73:1990;1865 (f) Schuda P.F., Price W.A. J. Org. Chem. 52:1987;1972 (g) de March P., Moreno-Mañas M., Casado J., Pleixats R., Roca J.L., Trius A. J. Heterocycl. Chem. 21:1984;85. see also 1369.
    • (1999) Acta Crystallogr. , vol.C55 , pp. 1698
    • Hua, D.H.1    Chen, Y.2    Sin, H.-S.3    Robinson, P.D.4    Meyers, C.Y.5    Perchellet, E.M.6    Perchellet, J.-P.7    Chiang, P.K.8    Biellmann, J.-P.9
  • 23
    • 0001586037 scopus 로고
    • For related studies, see: (a) Cravotto G., Nano G.M., Tagliapietra S. Synthesis. 2001;49 (b) Hua D.H., Chen Y., Sin H.-S., Robinson P.D., Meyers C.Y., Perchellet E.M., Perchellet J.-P., Chiang P.K., Biellmann J.-P. Acta Crystallogr. C55:1999;1698 (c) Krasnaya Z.A., Bogdanov V.S., Burova S.A., Smirnova Y.V. Russ. Chem. 44:1995;2118 (d) Heber D., Berghaus T. J. Heterocycl. Chem. 31:1994;1353 (e) Appendino G., Cravotto G., Tagliapietra S., Nano G.M., Palmisano G. Helv. Chim. Acta. 73:1990;1865 (f) Schuda P.F., Price W.A. J. Org. Chem. 52:1987;1972 (g) de March P., Moreno-Mañas M., Casado J., Pleixats R., Roca J.L., Trius A. J. Heterocycl. Chem. 21:1984;85. see also 1369.
    • (1995) Russ. Chem. , vol.44 , pp. 2118
    • Krasnaya, Z.A.1    Bogdanov, V.S.2    Burova, S.A.3    Smirnova, Y.V.4
  • 24
    • 0028590003 scopus 로고
    • For related studies, see: (a) Cravotto G., Nano G.M., Tagliapietra S. Synthesis. 2001;49 (b) Hua D.H., Chen Y., Sin H.-S., Robinson P.D., Meyers C.Y., Perchellet E.M., Perchellet J.-P., Chiang P.K., Biellmann J.-P. Acta Crystallogr. C55:1999;1698 (c) Krasnaya Z.A., Bogdanov V.S., Burova S.A., Smirnova Y.V. Russ. Chem. 44:1995;2118 (d) Heber D., Berghaus T. J. Heterocycl. Chem. 31:1994;1353 (e) Appendino G., Cravotto G., Tagliapietra S., Nano G.M., Palmisano G. Helv. Chim. Acta. 73:1990;1865 (f) Schuda P.F., Price W.A. J. Org. Chem. 52:1987;1972 (g) de March P., Moreno-Mañas M., Casado J., Pleixats R., Roca J.L., Trius A. J. Heterocycl. Chem. 21:1984;85. see also 1369.
    • (1994) J. Heterocycl. Chem. , vol.31 , pp. 1353
    • Heber, D.1    Berghaus, T.2
  • 25
    • 0025155785 scopus 로고
    • For related studies, see: (a) Cravotto G., Nano G.M., Tagliapietra S. Synthesis. 2001;49 (b) Hua D.H., Chen Y., Sin H.-S., Robinson P.D., Meyers C.Y., Perchellet E.M., Perchellet J.-P., Chiang P.K., Biellmann J.-P. Acta Crystallogr. C55:1999;1698 (c) Krasnaya Z.A., Bogdanov V.S., Burova S.A., Smirnova Y.V. Russ. Chem. 44:1995;2118 (d) Heber D., Berghaus T. J. Heterocycl. Chem. 31:1994;1353 (e) Appendino G., Cravotto G., Tagliapietra S., Nano G.M., Palmisano G. Helv. Chim. Acta. 73:1990;1865 (f) Schuda P.F., Price W.A. J. Org. Chem. 52:1987;1972 (g) de March P., Moreno-Mañas M., Casado J., Pleixats R., Roca J.L., Trius A. J. Heterocycl. Chem. 21:1984;85. see also 1369.
    • (1990) Helv. Chim. Acta , vol.73 , pp. 1865
    • Appendino, G.1    Cravotto, G.2    Tagliapietra, S.3    Nano, G.M.4    Palmisano, G.5
  • 26
    • 0001597307 scopus 로고
    • For related studies, see: (a) Cravotto G., Nano G.M., Tagliapietra S. Synthesis. 2001;49 (b) Hua D.H., Chen Y., Sin H.-S., Robinson P.D., Meyers C.Y., Perchellet E.M., Perchellet J.-P., Chiang P.K., Biellmann J.-P. Acta Crystallogr. C55:1999;1698 (c) Krasnaya Z.A., Bogdanov V.S., Burova S.A., Smirnova Y.V. Russ. Chem. 44:1995;2118 (d) Heber D., Berghaus T. J. Heterocycl. Chem. 31:1994;1353 (e) Appendino G., Cravotto G., Tagliapietra S., Nano G.M., Palmisano G. Helv. Chim. Acta. 73:1990;1865 (f) Schuda P.F., Price W.A. J. Org. Chem. 52:1987;1972 (g) de March P., Moreno-Mañas M., Casado J., Pleixats R., Roca J.L., Trius A. J. Heterocycl. Chem. 21:1984;85. see also 1369.
    • (1987) J. Org. Chem. , vol.52 , pp. 1972
    • Schuda, P.F.1    Price, W.A.2
  • 27
    • 84986463536 scopus 로고
    • For related studies, see: (a). see also 1369
    • For related studies, see: (a) Cravotto G., Nano G.M., Tagliapietra S. Synthesis. 2001;49 (b) Hua D.H., Chen Y., Sin H.-S., Robinson P.D., Meyers C.Y., Perchellet E.M., Perchellet J.-P., Chiang P.K., Biellmann J.-P. Acta Crystallogr. C55:1999;1698 (c) Krasnaya Z.A., Bogdanov V.S., Burova S.A., Smirnova Y.V. Russ. Chem. 44:1995;2118 (d) Heber D., Berghaus T. J. Heterocycl. Chem. 31:1994;1353 (e) Appendino G., Cravotto G., Tagliapietra S., Nano G.M., Palmisano G. Helv. Chim. Acta. 73:1990;1865 (f) Schuda P.F., Price W.A. J. Org. Chem. 52:1987;1972 (g) de March P., Moreno-Mañas M., Casado J., Pleixats R., Roca J.L., Trius A. J. Heterocycl. Chem. 21:1984;85. see also 1369.
    • (1984) J. Heterocycl. Chem. , vol.21 , pp. 85
    • De March, P.1    Moreno-Mañas, M.2    Casado, J.3    Pleixats, R.4    Roca, J.L.5    Trius, A.6
  • 28
    • 0001784887 scopus 로고
    • For leading references on electrocyclic ring-closures involving 1-oxatrienes, see: (a) Shishido K., Ito M., Shimada S.-I., Fukumoto K., Kametani T. Chem. Lett. 1984;1943 (b) Shishido K., Hiroya K., Fukumoto K., Kametani T. Tetrahedron Lett. 27:1986;971. For leading references on electrocyclic ring-closure involving 1-azatrienes, see: (c) Maynard D.F., Okamura W.H. J. Org. Chem. 60:1995;1763 (d) Okamura W.H., de Lera A.R., Reischl W. J. Am. Chem. Soc. 110:1988;4462.
    • (1984) Chem. Lett. , pp. 1943
    • Shishido, K.1    Ito, M.2    Shimada, S.-I.3    Fukumoto, K.4    Kametani, T.5
  • 29
    • 0001670075 scopus 로고
    • For leading references on electrocyclic ring-closures involving 1-oxatrienes, see: (a) Shishido K., Ito M., Shimada S.-I., Fukumoto K., Kametani T. Chem. Lett. 1984;1943 (b) Shishido K., Hiroya K., Fukumoto K., Kametani T. Tetrahedron Lett. 27:1986;971. For leading references on electrocyclic ring-closure involving 1-azatrienes, see: (c) Maynard D.F., Okamura W.H. J. Org. Chem. 60:1995;1763 (d) Okamura W.H., de Lera A.R., Reischl W. J. Am. Chem. Soc. 110:1988;4462.
    • (1986) Tetrahedron Lett. , vol.27 , pp. 971
    • Shishido, K.1    Hiroya, K.2    Fukumoto, K.3    Kametani, T.4
  • 30
    • 0028920309 scopus 로고
    • For leading references on electrocyclic ring-closures involving 1-oxatrienes, see: (a) Shishido K., Ito M., Shimada S.-I., Fukumoto K., Kametani T. Chem. Lett. 1984;1943 (b) Shishido K., Hiroya K., Fukumoto K., Kametani T. Tetrahedron Lett. 27:1986;971. For leading references on electrocyclic ring-closure involving 1-azatrienes, see: (c) Maynard D.F., Okamura W.H. J. Org. Chem. 60:1995;1763 (d) Okamura W.H., de Lera A.R., Reischl W. J. Am. Chem. Soc. 110:1988;4462.
    • (1995) J. Org. Chem. , vol.60 , pp. 1763
    • Maynard, D.F.1    Okamura, W.H.2
  • 31
    • 33845280286 scopus 로고
    • For leading references on electrocyclic ring-closures involving 1-oxatrienes, see: (a). For leading references on electrocyclic ring-closure involving 1-azatrienes, see: (c)
    • For leading references on electrocyclic ring-closures involving 1-oxatrienes, see: (a) Shishido K., Ito M., Shimada S.-I., Fukumoto K., Kametani T. Chem. Lett. 1984;1943 (b) Shishido K., Hiroya K., Fukumoto K., Kametani T. Tetrahedron Lett. 27:1986;971. For leading references on electrocyclic ring-closure involving 1-azatrienes, see: (c) Maynard D.F., Okamura W.H. J. Org. Chem. 60:1995;1763 (d) Okamura W.H., de Lera A.R., Reischl W. J. Am. Chem. Soc. 110:1988;4462.
    • (1988) J. Am. Chem. Soc. , vol.110 , pp. 4462
    • Okamura, W.H.1    De Lera, A.R.2    Reischl, W.3
  • 36
    • 0037019536 scopus 로고    scopus 로고
    • For aza-variant of this formal [3+3] cycloaddition reaction using vinylogous amides, see: (a) Sklenicka H.M., Hsung R.P., McLaughlin M.J., Wei L.-L., Gerasyuto A.I., Brennessel W.W. J. Am. Chem. Soc. 124:2002;10435 (b) Wei L.-L., Sklenicka H.M., Gerasyuto A.I., Hsung R.P. Angew. Chem. Int. Ed. 40:2001;1516 (c) Sklenicka H.M., Hsung R.P., Wei L.-L., McLaughlin M.J., Gerasyuto A.I., Degen S.J., Mulder J.A. Org. Lett. 2:2000;1161 (d) Hsung R.P., Wei L.-L., Sklenicka H.M., Douglas C.J., McLaughlin M.J., Mulder J.A., Yao L. J. Org. Lett. 1:1999;509.
    • (2002) J. Am. Chem. Soc. , vol.124 , pp. 10435
    • Sklenicka, H.M.1    Hsung, R.P.2    McLaughlin, M.J.3    Wei, L.-L.4    Gerasyuto, A.I.5    Brennessel, W.W.6
  • 37
    • 0035901688 scopus 로고    scopus 로고
    • For aza-variant of this formal [3+3] cycloaddition reaction using vinylogous amides, see: (a) Sklenicka H.M., Hsung R.P., McLaughlin M.J., Wei L.-L., Gerasyuto A.I., Brennessel W.W. J. Am. Chem. Soc. 124:2002;10435 (b) Wei L.-L., Sklenicka H.M., Gerasyuto A.I., Hsung R.P. Angew. Chem. Int. Ed. 40:2001;1516 (c) Sklenicka H.M., Hsung R.P., Wei L.-L., McLaughlin M.J., Gerasyuto A.I., Degen S.J., Mulder J.A. Org. Lett. 2:2000;1161 (d) Hsung R.P., Wei L.-L., Sklenicka H.M., Douglas C.J., McLaughlin M.J., Mulder J.A., Yao L. J. Org. Lett. 1:1999;509.
    • (2001) Angew. Chem. Int. Ed. , vol.40 , pp. 1516
    • Wei, L.-L.1    Sklenicka, H.M.2    Gerasyuto, A.I.3    Hsung, R.P.4
  • 38
    • 0000193493 scopus 로고    scopus 로고
    • For aza-variant of this formal [3+3] cycloaddition reaction using vinylogous amides, see: (a) Sklenicka H.M., Hsung R.P., McLaughlin M.J., Wei L.-L., Gerasyuto A.I., Brennessel W.W. J. Am. Chem. Soc. 124:2002;10435 (b) Wei L.-L., Sklenicka H.M., Gerasyuto A.I., Hsung R.P. Angew. Chem. Int. Ed. 40:2001;1516 (c) Sklenicka H.M., Hsung R.P., Wei L.-L., McLaughlin M.J., Gerasyuto A.I., Degen S.J., Mulder J.A. Org. Lett. 2:2000;1161 (d) Hsung R.P., Wei L.-L., Sklenicka H.M., Douglas C.J., McLaughlin M.J., Mulder J.A., Yao L. J. Org. Lett. 1:1999;509.
    • (2000) Org. Lett. , vol.2 , pp. 1161
    • Sklenicka, H.M.1    Hsung, R.P.2    Wei, L.-L.3    McLaughlin, M.J.4    Gerasyuto, A.I.5    Degen, S.J.6    Mulder, J.A.7
  • 39
    • 0000546380 scopus 로고    scopus 로고
    • For aza-variant of this formal [3+3] cycloaddition reaction using vinylogous amides, see: (a)
    • For aza-variant of this formal [3+3] cycloaddition reaction using vinylogous amides, see: (a) Sklenicka H.M., Hsung R.P., McLaughlin M.J., Wei L.-L., Gerasyuto A.I., Brennessel W.W. J. Am. Chem. Soc. 124:2002;10435 (b) Wei L.-L., Sklenicka H.M., Gerasyuto A.I., Hsung R.P. Angew. Chem. Int. Ed. 40:2001;1516 (c) Sklenicka H.M., Hsung R.P., Wei L.-L., McLaughlin M.J., Gerasyuto A.I., Degen S.J., Mulder J.A. Org. Lett. 2:2000;1161 (d) Hsung R.P., Wei L.-L., Sklenicka H.M., Douglas C.J., McLaughlin M.J., Mulder J.A., Yao L. J. Org. Lett. 1:1999;509.
    • (1999) J. Org. Lett. , vol.1 , pp. 509
    • Hsung, R.P.1    Wei, L.-L.2    Sklenicka, H.M.3    Douglas, C.J.4    McLaughlin, M.J.5    Mulder, J.A.6    Yao, L.7
  • 41
    • 0037034346 scopus 로고    scopus 로고
    • For Õmura's approach, see: (a). For their total synthesis of (±)-arisugacin A, see: (b)
    • For Õmura's approach, see: (a) Handa M., Sunazuka T., Nagai K., Kimura R., Shirahata T., Tian Z.M., Otoguro K., Harigaya Y., Õmura S. J. Antibiotics. 54:2001;382. For their total synthesis of (±)-arisugacin A, see: (b) Sunazuka T., Handa M., Nagai K., Shirahata T., Harigaya Y. Org. Lett. 4:2002;367.
    • (2002) Org. Lett. , vol.4 , pp. 367
    • Sunazuka, T.1    Handa, M.2    Nagai, K.3    Shirahata, T.4    Harigaya, Y.5
  • 43
    • 0037193115 scopus 로고    scopus 로고
    • For our total synthesis, see: (a)
    • For our total synthesis, see: (a) Wang J., Cole K.P., Wei L.L., Zehnder L.R., Hsung R.P. Tetrahedron Lett. 43:2002;3337 (b) Cole K.P., Hsung R.P., Yang X.-F. Tetrahedron Lett. 43:2002;3341.
    • (2002) Tetrahedron Lett. , vol.43 , pp. 3341
    • Cole, K.P.1    Hsung, R.P.2    Yang, X.-F.3
  • 50
    • 85001822216 scopus 로고    scopus 로고
    • 2O, or piperidinium salts as well as other amine salts. Hydrochloride salts tend to be even more reactive. L-Proline does not work well for this reaction contrary to other literature accounts, especially in EtOAc
    • 2O, or piperidinium salts as well as other amine salts. Hydrochloride salts tend to be even more reactive. L-Proline does not work well for this reaction contrary to other literature accounts, especially in EtOAc.
  • 55
    • 0003733970 scopus 로고    scopus 로고
    • Abstract No. ORGN-51, Washington D.C., Spring
    • For a much earlier preliminary communication, see: Zehnder, L. R.; Hsung, R. P.; Wang, J., Abstract No. ORGN-51, 220th ACS National Meeting, Washington D.C., Spring, 2000.
    • (2000) 220th ACS National Meeting
    • Zehnder, L.R.1    Hsung, R.P.2    Wang, J.3
  • 57
    • 85001835210 scopus 로고    scopus 로고
    • When using various peroxyacids, the best result gave the tentatively assigned hexacycle (Ref. 28) as the major product in 28% yield with the desired product in only 21% yield unlike those reported (Ref. 16)
    • When using various peroxyacids, the best result gave the tentatively assigned hexacycle (Ref. 28) as the major product in 28% yield with the desired product in only 21% yield unlike those reported (Ref. 16).
  • 58
    • 85001700655 scopus 로고    scopus 로고
    • The hexacycle was likely a result of intramolecular trapping of the incipient oxocarbenium intermediate by the C1-OH. Such facile trapping by oxygen nucleophiles agrees well with our previous experience in the model studies and with the hexacycle that at this point is not useful for the arisugacin synthesis
    • The hexacycle was likely a result of intramolecular trapping of the incipient oxocarbenium intermediate by the C1-OH. Such facile trapping by oxygen nucleophiles agrees well with our previous experience in the model studies and with the hexacycle that at this point is not useful for the arisugacin synthesis.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.