-
2
-
-
0032582026
-
-
M. Satake, K. Ofuji, H. Naoki, K. J. James, A. Furey, T. McMahon, J. Silke, T. Yasumoto, J. Am. Chem. Soc. 1998, 120, 9967-9968.
-
(1998)
J. Am. Chem. Soc
, vol.120
, pp. 9967-9968
-
-
Satake, M.1
Ofuji, K.2
Naoki, H.3
James, K.J.4
Furey, A.5
McMahon, T.6
Silke, J.7
Yasumoto, T.8
-
3
-
-
0001480805
-
-
a) K. C. Nicolaou, P. M. Pihko, N. Diedrichs, N. Zou, F. Bernal, Angew. Chem. 2001, 113, 1302-1305;
-
(2001)
Angew. Chem
, vol.113
, pp. 1302-1305
-
-
Nicolaou, K.C.1
Pihko, P.M.2
Diedrichs, N.3
Zou, N.4
Bernal, F.5
-
4
-
-
0035794851
-
-
Angew. Chem. Int. Ed. 2001, 40, 1262-1265;
-
(2001)
Chem. Int. Ed
, vol.40
, pp. 1262-1265
-
-
Angew1
-
5
-
-
0042527923
-
-
b) K. C. Nicolaou, W. Y. Qian, F. Bernal, N. Uesaka, P. M. Pihko, J. Hinrichs, Angew. Chem. 2001, 113, 4192-4195;
-
(2001)
Angew. Chem
, vol.113
, pp. 4192-4195
-
-
Nicolaou, K.C.1
Qian, W.Y.2
Bernal, F.3
Uesaka, N.4
Pihko, P.M.5
Hinrichs, J.6
-
6
-
-
0035813929
-
-
Angew. Chem. Int. Ed. 2001, 40, 4068-4071;
-
(2001)
Chem. Int. Ed
, vol.40
, pp. 4068-4071
-
-
Angew1
-
9
-
-
0037182747
-
-
e) R. G. Carter, T. C. Bourland, D. E. Graves, Org. Lett. 2002, 4, 2177-2179;
-
(2002)
Org. Lett
, vol.4
, pp. 2177-2179
-
-
Carter, R.G.1
Bourland, T.C.2
Graves, D.E.3
-
10
-
-
0037182684
-
-
f) R. G. Carter, D. E. Graves, M. A. Gronemeyer, G. S. Tschumper, Org. Lett. 2002, 4, 2181-2184;
-
(2002)
Org. Lett
, vol.4
, pp. 2181-2184
-
-
Carter, R.G.1
Graves, D.E.2
Gronemeyer, M.A.3
Tschumper, G.S.4
-
11
-
-
0142155228
-
-
g) R. G. Carter, T. C. Bourland, X. T. Zhou, M. A. Gronemeyer, Tetrahedron 2003, 59, 8963-8974;
-
(2003)
Tetrahedron
, vol.59
, pp. 8963-8974
-
-
Carter, R.G.1
Bourland, T.C.2
Zhou, X.T.3
Gronemeyer, M.A.4
-
13
-
-
34347209270
-
-
X. T. Zhou, R. G. Carter, Angew. Chem. 2006, 118, 1819-1822; Angew. Chem. Int. Ed. 2006, 45, 1787-1790;
-
i) X. T. Zhou, R. G. Carter, Angew. Chem. 2006, 118, 1819-1822; Angew. Chem. Int. Ed. 2006, 45, 1787-1790;
-
-
-
-
14
-
-
34347234636
-
-
j) X. T. Zhou, L. Lu, D. P. Furkert, C. E. Wells, R. G. Carter, Angew. Chem. 2006, 118, 7784-7788;
-
(2006)
Angew. Chem
, vol.118
, pp. 7784-7788
-
-
Zhou, X.T.1
Lu, L.2
Furkert, D.P.3
Wells, C.E.4
Carter, R.G.5
-
15
-
-
33845217934
-
-
Angew. Chem. Int. Ed. 2006, 45, 7622-7626;
-
(2006)
Chem. Int. Ed
, vol.45
, pp. 7622-7626
-
-
Angew1
-
17
-
-
0035810370
-
-
l) J. Aiguade, J. L. Hao, C. J. Forsyth, Org. Lett. 2001, 3, 979-982;
-
(2001)
Org. Lett
, vol.3
, pp. 979-982
-
-
Aiguade, J.1
Hao, J.L.2
Forsyth, C.J.3
-
18
-
-
0035966587
-
-
m) J. Aiguade, J. L. Hao, C. J. Forsyth, Tetrahedron Lett. 2001, 42, 817-820;
-
(2001)
Tetrahedron Lett
, vol.42
, pp. 817-820
-
-
Aiguade, J.1
Hao, J.L.2
Forsyth, C.J.3
-
19
-
-
0035966571
-
-
n) J. L. Hao, J. Aiguade, C. J. Forsyth, Tetrahedron Lett. 2001, 42, 821-824;
-
(2001)
Tetrahedron Lett
, vol.42
, pp. 821-824
-
-
Hao, J.L.1
Aiguade, J.2
Forsyth, C.J.3
-
20
-
-
34347245116
-
-
o) C. J. Forsyth, J. L. Hao, J. Aiguade, Angew. Chem. 2006, 118, 3775-3779;
-
(2006)
Angew. Chem
, vol.118
, pp. 3775-3779
-
-
Forsyth, C.J.1
Hao, J.L.2
Aiguade, J.3
-
21
-
-
0035477181
-
-
Angew. Chem. Int. Ed. 2001, 40, 3663-3667;
-
(2001)
Chem. Int. Ed
, vol.40
, pp. 3663-3667
-
-
Angew1
-
22
-
-
9444248641
-
-
p) L. K. Geisler, S. Nguyen, C. J. Forsyth, Org. Lett. 2004, 6, 4159-4162;
-
(2004)
Org. Lett
, vol.6
, pp. 4159-4162
-
-
Geisler, L.K.1
Nguyen, S.2
Forsyth, C.J.3
-
23
-
-
33748113121
-
-
q) S. Nguyen, J. Y. Xu, C. J. Forsyth, Tetrahedron 2006, 62, 5338-5346;
-
(2006)
Tetrahedron
, vol.62
, pp. 5338-5346
-
-
Nguyen, S.1
Xu, J.Y.2
Forsyth, C.J.3
-
24
-
-
33845187078
-
-
r) C. J. Forsyth, J. Y. Xu, S. T. Nguyen, I. A. Samdal, L. R. Briggs, T. Rundberget, M. Sandvik, C. O. Miles, J. Am. Chem. Soc. 2006, 128, 15 114-15 116;
-
(2006)
J. Am. Chem. Soc
, vol.128
-
-
Forsyth, C.J.1
Xu, J.Y.2
Nguyen, S.T.3
Samdal, I.A.4
Briggs, L.R.5
Rundberget, T.6
Sandvik, M.7
Miles, C.O.8
-
25
-
-
34250783723
-
-
s) Y. F. Li, F. Zhou, C. J. Forsyth, Angew. Chem. 2007, 119, 283-286;
-
(2007)
Angew. Chem
, vol.119
, pp. 283-286
-
-
Li, Y.F.1
Zhou, F.2
Forsyth, C.J.3
-
26
-
-
33846072975
-
-
Angew. Chem. Int. Ed. 2007, 46, 279-282;
-
(2007)
Chem. Int. Ed
, vol.46
, pp. 279-282
-
-
Angew1
-
27
-
-
0042848835
-
-
t) M. Sasaki, Y. Iwamuro, J. Nemoto, M. Oikawa, Tetrahedron Lett. 2003, 44, 6199-6201;
-
(2003)
Tetrahedron Lett
, vol.44
, pp. 6199-6201
-
-
Sasaki, M.1
Iwamuro, Y.2
Nemoto, J.3
Oikawa, M.4
-
31
-
-
33748941250
-
-
x) M. Oikawa, T. Uehara, T. Iwayama, M. Sasaki, Org. Lett. 2006, 8, 3943-3946.
-
(2006)
Org. Lett
, vol.8
, pp. 3943-3946
-
-
Oikawa, M.1
Uehara, T.2
Iwayama, T.3
Sasaki, M.4
-
32
-
-
10744220300
-
-
a) K. C. Nicolaou, Y. W. Li, N. Uesaka, T. V. Koftis, S. Vyskocil, T. T. Ling, M. Govindasamy, W. Qian, F. Bernal, D. Y. K. Chen, Angew. Chem. 2003, 115, 3771-3776;
-
(2003)
Angew. Chem
, vol.115
, pp. 3771-3776
-
-
Nicolaou, K.C.1
Li, Y.W.2
Uesaka, N.3
Koftis, T.V.4
Vyskocil, S.5
Ling, T.T.6
Govindasamy, M.7
Qian, W.8
Bernal, F.9
Chen, D.Y.K.10
-
33
-
-
10744223453
-
-
Angew. Chem. Int. Ed. 2003, 42, 3643-3648;
-
(2003)
Chem. Int. Ed
, vol.42
, pp. 3643-3648
-
-
Angew1
-
34
-
-
0041526022
-
-
b) K. C. Nicolaou, D. Y. K. Chen, Y. W. Li, W. Y. Qian, T. T. Ling, S. Vyskocil, T. V. Koftis, M. Govindasamy, N. Uesaka, Angew. Chem. 2003, 115, 3777-3781;
-
(2003)
Angew. Chem
, vol.115
, pp. 3777-3781
-
-
Nicolaou, K.C.1
Chen, D.Y.K.2
Li, Y.W.3
Qian, W.Y.4
Ling, T.T.5
Vyskocil, S.6
Koftis, T.V.7
Govindasamy, M.8
Uesaka, N.9
-
35
-
-
0042035641
-
-
Angew. Chem. Int. Ed. 2003, 42, 3649-3653;
-
(2003)
Chem. Int. Ed
, vol.42
, pp. 3649-3653
-
-
Angew1
-
36
-
-
33644520879
-
-
c) K. C. Nicolaou, P. M. Pihko, F. Bernal, M. O. Frederick, W. Y. Qian, N. Uesaka, N. Diedrichs, J. Hinrichs, T. V. Koftis, E. Loizidou, G. Petrovic, M. Rodriquez, D. Sarlah, N. Zou, J. Am. Chem. Soc. 2006, 128, 2244-2257;
-
(2006)
J. Am. Chem. Soc
, vol.128
, pp. 2244-2257
-
-
Nicolaou, K.C.1
Pihko, P.M.2
Bernal, F.3
Frederick, M.O.4
Qian, W.Y.5
Uesaka, N.6
Diedrichs, N.7
Hinrichs, J.8
Koftis, T.V.9
Loizidou, E.10
Petrovic, G.11
Rodriquez, M.12
Sarlah, D.13
Zou, N.14
-
37
-
-
33644520246
-
-
d) K. C. Nicolaou, D. Y. K. Chen, Y. W. Li, N. Uesaka, G. Petrovic, T. V. Koftis, F. Bernal, M. O. Frederick, M. Govindasamy, T. T. Ling, P. M. Pihko, W. J. Tang, S. Vyskocil, J. Am. Chem. Soc. 2006, 128, 2258-2267.
-
(2006)
J. Am. Chem. Soc
, vol.128
, pp. 2258-2267
-
-
Nicolaou, K.C.1
Chen, D.Y.K.2
Li, Y.W.3
Uesaka, N.4
Petrovic, G.5
Koftis, T.V.6
Bernal, F.7
Frederick, M.O.8
Govindasamy, M.9
Ling, T.T.10
Pihko, P.M.11
Tang, W.J.12
Vyskocil, S.13
-
38
-
-
4544356033
-
-
a) K. C. Nicolaou, S. Vyskocil, T. V. Koftis, Y. M. A. Yamada, T. T. Ling, D. Y. K. Chen, W. J. Tang, G. Petrovic, M. O. Frederick, Y. W. Li, M. Satake, Angew. Chem. 2004, 116, 4412-4418;
-
(2004)
Angew. Chem
, vol.116
, pp. 4412-4418
-
-
Nicolaou, K.C.1
Vyskocil, S.2
Koftis, T.V.3
Yamada, Y.M.A.4
Ling, T.T.5
Chen, D.Y.K.6
Tang, W.J.7
Petrovic, G.8
Frederick, M.O.9
Li, Y.W.10
Satake, M.11
-
39
-
-
4544298099
-
-
Angew. Chem. Int. Ed. 2004, 43, 4312-4318;
-
(2004)
Chem. Int. Ed
, vol.43
, pp. 4312-4318
-
-
Angew1
-
40
-
-
4544330880
-
-
b) K. C. Nicolaou, T. V. Koftis, S. Vyskocil, G. Petrovic, T. T. Ling, Y. M. A. Yamada, W. J. Tang, M. O. Frederick, Angew. Chem. 2004, 116, 4418-4424;
-
(2004)
Angew. Chem
, vol.116
, pp. 4418-4424
-
-
Nicolaou, K.C.1
Koftis, T.V.2
Vyskocil, S.3
Petrovic, G.4
Ling, T.T.5
Yamada, Y.M.A.6
Tang, W.J.7
Frederick, M.O.8
-
41
-
-
4544293553
-
-
Angew. Chem. Int. Ed. 2004, 43, 4318-4324;
-
(2004)
Chem. Int. Ed
, vol.43
, pp. 4318-4324
-
-
Angew1
-
42
-
-
33644942388
-
-
c) K. C. Nicolaou, T. V. Koftis, S. Vyskocil, G. Petrovic, W. J. Tang, M. O. Frederick, D. Y. K. Chen, Y. W. Li, T. T. Ling, Y. M. A. Yamada, J. Am. Chem. Soc. 2006, 128, 2859-2872.
-
(2006)
J. Am. Chem. Soc
, vol.128
, pp. 2859-2872
-
-
Nicolaou, K.C.1
Koftis, T.V.2
Vyskocil, S.3
Petrovic, G.4
Tang, W.J.5
Frederick, M.O.6
Chen, D.Y.K.7
Li, Y.W.8
Ling, T.T.9
Yamada, Y.M.A.10
-
43
-
-
33748642999
-
-
a) K. C. Nicolaou, M. O. Frederick, E. Z. Loizidou, G. Petrovic, K. P. Cole, T. V. Koftis, Y. M. A. Yamada, Chem. Asian J. 2006, 1, 245-263;
-
(2006)
Chem. Asian J
, vol.1
, pp. 245-263
-
-
Nicolaou, K.C.1
Frederick, M.O.2
Loizidou, E.Z.3
Petrovic, G.4
Cole, K.P.5
Koftis, T.V.6
Yamada, Y.M.A.7
-
44
-
-
33748651544
-
-
b) K. C. Nicolaou, M. O. Frederick, G. Petrovic, K. P. Cole, E. Z. Loizidou, Angew. Chem. 2006, 118, 2671-2677;
-
(2006)
Angew. Chem
, vol.118
, pp. 2671-2677
-
-
Nicolaou, K.C.1
Frederick, M.O.2
Petrovic, G.3
Cole, K.P.4
Loizidou, E.Z.5
-
45
-
-
33746273814
-
-
Angew. Chem. Int. Ed. 2006, 45, 2609-2615.
-
(2006)
Chem. Int. Ed
, vol.45
, pp. 2609-2615
-
-
Angew1
-
46
-
-
34347265096
-
-
See the following Communication: D. A. Evans, T. B. Dunn, L. Kværnø, A. Beauchemin, B. Raymer, E. J. Olhava, J. A. Mulder, M. Juhl, K. Kagechika, D. A. Favor, Angew. Chem. 2007, 119, 4782-4787;
-
See the following Communication: D. A. Evans, T. B. Dunn, L. Kværnø, A. Beauchemin, B. Raymer, E. J. Olhava, J. A. Mulder, M. Juhl, K. Kagechika, D. A. Favor, Angew. Chem. 2007, 119, 4782-4787;
-
-
-
-
47
-
-
34347231611
-
-
Angew. Chem. Int. Ed. 2007, 46, 4698-4703.
-
(2007)
Chem. Int. Ed
, vol.46
, pp. 4698-4703
-
-
Angew1
-
48
-
-
34347214307
-
-
A full account of these studies, including the first-generation syntheses of fragments, will subsequently be published
-
A full account of these studies, including the first-generation syntheses of fragments, will subsequently be published.
-
-
-
-
49
-
-
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-
-
Abbreviations: Bn, benzyl, CBS, Corey-Bakshi-Shibata, DDQ, 2,3-dichloro-5,6-dicyano-1,4-benzoquinone, DMAP, 4-dimethylaminopyridine, DMF, N,N-dimethylformamide, DMP, Dess-Martin periodinane, DMSO, dimethylsulfoxide, LDA, lithium diisopropylamide, LiDBB, lithium di-tert-butyl biphenylide, Mes, 2,4,6-trimethylphenyl, Nu, nucleophile, PMB, 4-methoxybenzyl, PPTS, pyridinium p-toluenesulfonate, py, pyridine, TBAF, tetrabutylammonium fluoride, TBDPS, tert- butyldiphenylsilyl, TBS, tert-butyldimethylsilyl, TES, triethylsilyl, TIPS, triisopropylsilyl
-
Abbreviations: Bn = benzyl, CBS = Corey-Bakshi-Shibata, DDQ = 2,3-dichloro-5,6-dicyano-1,4-benzoquinone, DMAP = 4-dimethylaminopyridine, DMF = N,N-dimethylformamide, DMP = Dess-Martin periodinane, DMSO = dimethylsulfoxide, LDA = lithium diisopropylamide, LiDBB = lithium di-tert-butyl biphenylide, Mes = 2,4,6-trimethylphenyl, Nu = nucleophile, PMB = 4-methoxybenzyl, PPTS = pyridinium p-toluenesulfonate, py = pyridine, TBAF = tetrabutylammonium fluoride, TBDPS = tert- butyldiphenylsilyl, TBS = tert-butyldimethylsilyl, TES = triethylsilyl, TIPS = triisopropylsilyl.
-
-
-
-
50
-
-
0001322119
-
-
a) T. L. Choi, A. K. Chatterjee, R. H. Grubbs, Angew. Chem. 2001, 113, 1317-1319;
-
(2001)
Angew. Chem
, vol.113
, pp. 1317-1319
-
-
Choi, T.L.1
Chatterjee, A.K.2
Grubbs, R.H.3
-
51
-
-
0035794963
-
-
Angew. Chem. Int. Ed. 2001, 40, 1277-1279;
-
(2001)
Chem. Int. Ed
, vol.40
, pp. 1277-1279
-
-
Angew1
-
53
-
-
0038215596
-
-
Angew. Chem. Int. Ed. 2003, 42, 1900-1923.
-
(2003)
Chem. Int. Ed
, vol.42
, pp. 1900-1923
-
-
Angew1
-
54
-
-
0030880683
-
-
S. W. Wright, D. L. Hageman, A. S. Wright, L. D. McClure, Tetrahedron Lett. 1997, 38, 7345-7348.
-
(1997)
Tetrahedron Lett
, vol.38
, pp. 7345-7348
-
-
Wright, S.W.1
Hageman, D.L.2
Wright, A.S.3
McClure, L.D.4
-
56
-
-
0033518572
-
-
J. S. Kingsbury, J. P. A. Harrity, P. J. Bonitatebus, A. H. Hoveyda, J. Am. Chem. Soc. 1999, 121, 791-799.
-
(1999)
J. Am. Chem. Soc
, vol.121
, pp. 791-799
-
-
Kingsbury, J.S.1
Harrity, J.P.A.2
Bonitatebus, P.J.3
Hoveyda, A.H.4
-
57
-
-
0025062252
-
-
M. Nakatsuka, J. A. Ragan, T. Sammakia, D. B. Smith, D. E. Uehling, S. L. Schreiber, J. Am. Chem. Soc. 1990, 112, 5583-5601.
-
(1990)
J. Am. Chem. Soc
, vol.112
, pp. 5583-5601
-
-
Nakatsuka, M.1
Ragan, J.A.2
Sammakia, T.3
Smith, D.B.4
Uehling, D.E.5
Schreiber, S.L.6
-
58
-
-
37049110943
-
-
a) A. Hirao, S. Itsuno, S. Nakahama, N. Yamazaki, J. Chem. Soc. Chem. Commun. 1981, 315-317;
-
(1981)
J. Chem. Soc. Chem. Commun
, pp. 315-317
-
-
Hirao, A.1
Itsuno, S.2
Nakahama, S.3
Yamazaki, N.4
-
59
-
-
37049112447
-
-
b) S. Itsuno, K. Ito, A. Hirao, S. Nakahama, J. Chem. Soc. Chem. Commun. 1983, 469-470;
-
(1983)
J. Chem. Soc. Chem. Commun
, pp. 469-470
-
-
Itsuno, S.1
Ito, K.2
Hirao, A.3
Nakahama, S.4
-
60
-
-
33845282886
-
-
c) E. J. Corey, R. K. Bakshi, S. Shibata, J. Am. Chem. Soc. 1987, 109, 5551-5553;
-
(1987)
J. Am. Chem. Soc
, vol.109
, pp. 5551-5553
-
-
Corey, E.J.1
Bakshi, R.K.2
Shibata, S.3
-
61
-
-
33845282438
-
-
d) E. J. Corey, R. K. Bakshi, S. Shibata, C. P. Chen, V. K. Singh, J. Am. Chem. Soc. 1987, 109, 7925-7926;
-
(1987)
J. Am. Chem. Soc
, vol.109
, pp. 7925-7926
-
-
Corey, E.J.1
Bakshi, R.K.2
Shibata, S.3
Chen, C.P.4
Singh, V.K.5
-
63
-
-
0032541271
-
-
Angew. Chem. Int. Ed. 1998, 37, 1986-2012.
-
(1998)
Chem. Int. Ed
, vol.37
, pp. 1986-2012
-
-
Angew1
-
65
-
-
0032540647
-
-
a) D. A. Evans, C. S. Burgey, N. A. Paras, T. Vojkovsky, S. W. Tregay, J. Am. Chem. Soc. 1998, 120, 5824-5825;
-
(1998)
J. Am. Chem. Soc
, vol.120
, pp. 5824-5825
-
-
Evans, D.A.1
Burgey, C.S.2
Paras, N.A.3
Vojkovsky, T.4
Tregay, S.W.5
-
66
-
-
0034706033
-
-
b) D. A. Evans, S. W. Tregay, C. S. Burgey, N. A. Paras, T. Vojkovsky, J. Am. Chem. Soc. 2000, 122, 7936-7943.
-
(2000)
J. Am. Chem. Soc
, vol.122
, pp. 7936-7943
-
-
Evans, D.A.1
Tregay, S.W.2
Burgey, C.S.3
Paras, N.A.4
Vojkovsky, T.5
-
68
-
-
84953502363
-
-
b) J. I. Levin, E. Turos, S. M. Weinreb, Synth. Commun. 1982, 12, 989-993.
-
(1982)
Synth. Commun
, vol.12
, pp. 989-993
-
-
Levin, J.I.1
Turos, E.2
Weinreb, S.M.3
-
69
-
-
0043231423
-
-
a) B. G. Vong, S. Abraham, A. X. Xiang, E. A. Theodorakis, Org. Lett. 2003, 5, 1617-1620;
-
(2003)
Org. Lett
, vol.5
, pp. 1617-1620
-
-
Vong, B.G.1
Abraham, S.2
Xiang, A.X.3
Theodorakis, E.A.4
-
70
-
-
33748468588
-
-
b) D. A. Evans, F. Urpi, T. C. Somers, J. S. Clark, M. T. Bilodeau, J. Am. Chem. Soc. 1990, 112, 8215-8216.
-
(1990)
J. Am. Chem. Soc
, vol.112
, pp. 8215-8216
-
-
Evans, D.A.1
Urpi, F.2
Somers, T.C.3
Clark, J.S.4
Bilodeau, M.T.5
-
72
-
-
0001013027
-
-
b) E. Negishi, D. R. Swanson, C. J. Rousset, J. Org. Chem. 1990, 55, 5406-5409.
-
(1990)
J. Org. Chem
, vol.55
, pp. 5406-5409
-
-
Negishi, E.1
Swanson, D.R.2
Rousset, C.J.3
-
74
-
-
0033616106
-
-
C. H. Larsen, B. H. Ridgway, J. T. Shaw, K. A. Woerpel, J. Am. Chem. Soc. 1999, 121, 12 208-12 209.
-
(1999)
J. Am. Chem. Soc
, vol.121
-
-
Larsen, C.H.1
Ridgway, B.H.2
Shaw, J.T.3
Woerpel, K.A.4
-
79
-
-
49549126692
-
-
B. M. Trost, H. C. Arndt, P. E. Strege, T. R. Verhoeven, Tetrahedron Lett. 1976, 17, 3477-3478.
-
(1976)
Tetrahedron Lett
, vol.17
, pp. 3477-3478
-
-
Trost, B.M.1
Arndt, H.C.2
Strege, P.E.3
Verhoeven, T.R.4
-
80
-
-
34347246548
-
-
The selective removal of the TES group was accompanied by minor loss of the TIPS protecting group at C1. Since the crude mixture of 33 was subjected directly to the PPTS-mediated spirocyclization, 76% of 34 was obtained directly in the spirocyclization event while an additional 7% of 34 was obtained after reinstallation of the TIPS substituent at C21
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The selective removal of the TES group was accompanied by minor loss of the TIPS protecting group at C1. Since the crude mixture of 33 was subjected directly to the PPTS-mediated spirocyclization, 76% of 34 was obtained directly in the spirocyclization event while an additional 7% of 34 was obtained after reinstallation of the TIPS substituent at C21.
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