Enantioselective Total Synthesis of (-)-Clavosolide A and B
摘要:
完全报道了(-)-clavosolide A和B的对映选择性全合成,包括所提出的(-)-clavosolide A (1)结构的合成、修订后的(-)-clavosolide A (5)结构的合成以及修订后的(-)-clavosolide B (6)结构的合成。通过比较其旋光值和$^1H$及$^{13}C$核磁共振谱,明确证实了这些天然产物的相对和绝对立体化学。
Enantioselective Total Synthesis of (−)-Clavosolide B
作者:Jung Beom Son、Min-ho Hwang、Wonsun Lee、Duck-Hyung Lee
DOI:10.1021/ol7015115
日期:2007.9.1
Enantioselective synthesis of 2, a revised structure for (-)-clavosolide B, was accomplished by a convergent approach, where syn-selective aldol, hydroxy-directed cyclopropanation, Mitsunobu inversion, Schmidt-type glycosylation, and macrolactonization reactions were utilized as key reactions. Comparison of 1H and 13C NMR spectra and optical rotation measurement confirmed the relative and absolute