-
Stereochemical Control in Microbial Reduction. 12. (<i>S</i>)-4-Nitro-2-butanol as a Source to Synthesize Natural Products
作者:Kaoru Nakamura、Takashi Kitayama、Yoshihiko Inoue、Atsuyoshi Ohno
DOI:10.1246/bcsj.63.91
日期:1990.1
(S)-(+)-4-Nitro-2-butanol (1) obtained by the stereoselective reduction of 4-nitro-2-butanone by bakers’ yeast was employed for the syntheses of natural products. A precursor of (+)-brefeldin A is synthesized starting from this chiral building block by 10 steps short-cut procedure compared with the shortest method so far reported. (S)-(+)-Sulcatol is obtained in much better enantiomeric purity than those reported. The reactivity of 1 in base-catalyzed condensations with Michael acceptors or aldehydes is largely affected by a base employed as the catalyst.
通过用面包酵母进行立体选择性还原4-硝基-2-丁酮,获得的(S)-(+)-4-硝基-2-丁醇(1)被用于天然产物的合成。以该手性构建块为起始材料,通过10步的简化工艺合成了(+)-布雷菲尔丁A的前体,相较于目前已报道的最短方法,这一工艺大大缩短了步骤。所获得的(S)-(+)-苏卡醇的对映体纯度明显高于已报道的结果。1在与迈克尔受体或醛进行碱催化缩合反应时,其反应性受到所用催化剂的碱的影响。
-
Taber, Douglas F.; Silferberg, Lee J.; Robinson, Edward D., Journal of the American Chemical Society, 1991, vol. 113, # 17, p. 6639 - 6645
作者:Taber, Douglas F.、Silferberg, Lee J.、Robinson, Edward D.
DOI:——
日期:——
-
NAKAMURA, KAORU;KITAYAMA, TAKASHI;INOUE, YOSHIHIKO;OHNO, ATSUYOSHI, BULL. CHEM. SOC. JAP., 63,(1990) N, C. 91-96
作者:NAKAMURA, KAORU、KITAYAMA, TAKASHI、INOUE, YOSHIHIKO、OHNO, ATSUYOSHI
DOI:——
日期:——
-
GOPALAN, ARAVAMUDAN S.;JACOBS, HOLLIE K., TETRAHEDRON LETT., 31,(1990) N9, C. 5575-5578
作者:GOPALAN, ARAVAMUDAN S.、JACOBS, HOLLIE K.
DOI:——
日期:——
-
Gais, Hans-Joachim; Lied, Thomas, Angewandte Chemie, 1984, vol. 96, # 2, p. 143 - 145
作者:Gais, Hans-Joachim、Lied, Thomas
DOI:——
日期:——