Stereoselective synthesis of the C21C27 fragment of the phorboxazoles
摘要:
A stereoselective synthesis of the C21-C27 fragment of phorboxazoles A and B was achieved in 12 linear steps via an intramolecular cyclization induced by mercury acetate, to afford a functionalized tetrahydropyran. (C) 2003 Elsevier Science Ltd. All rights reserved.
Toward the Total Synthesis of Phorboxazole B: An Efficient Synthesis of the C20−C46 Segment
作者:De Run Li、Cai Yun Sun、Ce Su、Guo-Qiang Lin、Wei-Shan Zhou
DOI:10.1021/ol048275x
日期:2004.11.1
An efficient synthesis of the C20-C46 segment of phorboxazole B is described. The key steps involved Hg(OAc)(2)/I(2)-induced cyclization to construct the cis-tetrahydropyran moiety, the coupling of the metalated 2-methyloxazole 7 with lactone 6, and Julia olefination to furnish the conjugated diene moiety.