-
1
-
-
0021981588
-
-
Yasumoto T., Murata M., Oshima Y., Sano M., Matsumoto G.K., and Clardy J. Tetrahedron 41 (1985) 1019
-
(1985)
Tetrahedron
, vol.41
, pp. 1019
-
-
Yasumoto, T.1
Murata, M.2
Oshima, Y.3
Sano, M.4
Matsumoto, G.K.5
Clardy, J.6
-
8
-
-
0032703235
-
-
Hori M., Matsuura Y., Yoshimoto R., Ozaki H., Yasumoto T., and Karaki H. Folia Pharmacol. Jpn. 114 (1999) 225
-
(1999)
Folia Pharmacol. Jpn.
, vol.114
, pp. 225
-
-
Hori, M.1
Matsuura, Y.2
Yoshimoto, R.3
Ozaki, H.4
Yasumoto, T.5
Karaki, H.6
-
10
-
-
0036609451
-
-
Leira F., Cabado A.G., Vieytes M.R., Roman Y., Alfonso A., Botana L.M., Yasumoto T., Malaguti C., and Rossini G.P. Biochem. Pharmacol. 63 (2002) 1979
-
(2002)
Biochem. Pharmacol.
, vol.63
, pp. 1979
-
-
Leira, F.1
Cabado, A.G.2
Vieytes, M.R.3
Roman, Y.4
Alfonso, A.5
Botana, L.M.6
Yasumoto, T.7
Malaguti, C.8
Rossini, G.P.9
-
11
-
-
0037011207
-
-
The total synthesis of pectenotoxins-4 and -8, see:
-
The total synthesis of pectenotoxins-4 and -8, see:. Evans D.A., Rajapakse H.A., and Stenkamp D. Angew. Chem., Int. Ed. 41 (2002) 4569
-
(2002)
Angew. Chem., Int. Ed.
, vol.41
, pp. 4569
-
-
Evans, D.A.1
Rajapakse, H.A.2
Stenkamp, D.3
-
12
-
-
85047698843
-
-
Evans D.A., Rajapakse H.A., Chiu A., and Stenkamp D. Angew. Chem., Int. Ed. 41 (2002) 4573
-
(2002)
Angew. Chem., Int. Ed.
, vol.41
, pp. 4573
-
-
Evans, D.A.1
Rajapakse, H.A.2
Chiu, A.3
Stenkamp, D.4
-
13
-
-
0035859345
-
-
Other synthetic studies, see:
-
Other synthetic studies, see:. Micalizino G.C., and Roush W.R. Org. Lett. 3 (2001) 1949
-
(2001)
Org. Lett.
, vol.3
, pp. 1949
-
-
Micalizino, G.C.1
Roush, W.R.2
-
22
-
-
33847638000
-
-
O'Connor P.D., Knight C.K., Friedrich D., Peng X., and Paquette L.A. J. Org. Chem. 72 (2007) 1747
-
(2007)
J. Org. Chem.
, vol.72
, pp. 1747
-
-
O'Connor, P.D.1
Knight, C.K.2
Friedrich, D.3
Peng, X.4
Paquette, L.A.5
-
26
-
-
20544471398
-
-
Fujiwara K., Kobayashi M., Yamamoto F., Aki Y., Kawamura M., Awakura D., Amano S., Okano A., Murai A., Kawai H., and Suzuki T. Tetrahedron Lett. 46 (2005) 5067
-
(2005)
Tetrahedron Lett.
, vol.46
, pp. 5067
-
-
Fujiwara, K.1
Kobayashi, M.2
Yamamoto, F.3
Aki, Y.4
Kawamura, M.5
Awakura, D.6
Amano, S.7
Okano, A.8
Murai, A.9
Kawai, H.10
Suzuki, T.11
-
31
-
-
0025181124
-
-
Clive D.L.J., Murthy K.S.K., Wee A.G.H., Prasad J.S., da Silva G.V.J., Majewski M., Anderson P.C., Evans C.F., Haugen R.D., Heerze L.D., and Barrie J.R. J. Am. Chem. Soc. 112 (1990) 3018
-
(1990)
J. Am. Chem. Soc.
, vol.112
, pp. 3018
-
-
Clive, D.L.J.1
Murthy, K.S.K.2
Wee, A.G.H.3
Prasad, J.S.4
da Silva, G.V.J.5
Majewski, M.6
Anderson, P.C.7
Evans, C.F.8
Haugen, R.D.9
Heerze, L.D.10
Barrie, J.R.11
-
34
-
-
2142858450
-
-
The absolute stereochemistry at C11 of 8 was determined by new Mosher's method:
-
The absolute stereochemistry at C11 of 8 was determined by new Mosher's method:. Ohtani I., Kusumi T., Kashman Y., and Kakisawa H. J. Am. Chem. Soc. 113 (1991) 4092
-
(1991)
J. Am. Chem. Soc.
, vol.113
, pp. 4092
-
-
Ohtani, I.1
Kusumi, T.2
Kashman, Y.3
Kakisawa, H.4
-
37
-
-
34249323104
-
-
note
-
3 of isopropyridene acetal 52 derived from 18 via 21 (Fig. 2).
-
-
-
-
40
-
-
34249275770
-
-
note
-
The use of 2,6-di-tert-butylpyridine was essential to obtain reproducible result.
-
-
-
-
44
-
-
34249278892
-
-
note
-
The optical yield of 11 was determined by HPLC using a chiral column [Daicel Chiralcel AD, eluent: hexane/2-propanol (9:1)].
-
-
-
-
45
-
-
84988087929
-
-
note
-
3, c 0.5): Krohn, K.; Meyer, A. Liebigs Ann. Chem. 1994, 167}.
-
-
-
-
48
-
-
34249323832
-
-
note
-
The absolute stereochemistry at C14 of 33 was determined by new Mosher's method. See Ref. 13.
-
-
-
-
49
-
-
34249295664
-
-
note
-
The presence of the TMS group at C12-oxygen reduced stereoselectivity of the epoxidation step.
-
-
-
-
50
-
-
34249337179
-
-
note
-
3, and between H16 and H19 in 37 (Fig. 3).
-
-
-
-
51
-
-
85022425406
-
-
We found that a primary alkyl DMB ether was readily removed on treatment with TMSOTf/2,6-lutidine. This phenomenon was helpful for selective detachment of the DMB group of 37 in the presence of the PMB ether at C11. On the other hand, detachment of a DMB group from 29 during TMS ether formation was avoided by lowering the reaction temperature (Scheme 3). cf.
-
We found that a primary alkyl DMB ether was readily removed on treatment with TMSOTf/2,6-lutidine. This phenomenon was helpful for selective detachment of the DMB group of 37 in the presence of the PMB ether at C11. On the other hand, detachment of a DMB group from 29 during TMS ether formation was avoided by lowering the reaction temperature (Scheme 3). cf. Oriyama T., Yatabe K., Kawada Y., and Koga G. Synlett (1995) 45
-
(1995)
Synlett
, pp. 45
-
-
Oriyama, T.1
Yatabe, K.2
Kawada, Y.3
Koga, G.4
-
53
-
-
34249334721
-
-
note
-
+]: 1192.6196; found, 1192.6213.
-
-
-
-
54
-
-
34249286719
-
-
note
-
3.
-
-
-
-
56
-
-
34249297700
-
-
note
-
2, imidazole; (ii) Mg; (iii) DDQ, (iv) m-CPBA (yielding an almost single diastereomer); (v) CSA.] (Fig. 4).
-
-
-
-
57
-
-
34249336816
-
-
note
-
+]: 348.2301; found, 348.2300.
-
-
-
|