Microginin, an angiotensin-converting enzyme inhibitory peptide isolated form the blue-green alga Microcystis aeruginosa, and its three diastereoisomers were efficiently synthesized, which unequivocally established the absolute stereostructure of microginin to be 1d.
Synthesis of a new type of antitumour agent panaxytriol: Synthesis of its four diastereomers
作者:Mukund K Gurjar、V Sylesh Kumar、B Venkateswara Rao
DOI:10.1016/s0040-4020(99)00732-2
日期:1999.10
Synthesis of four diastereomers of panaxytriol has been described. The basic objective is to create two acetylenic precursors followed by cuprous chloride mediated C-C bond coupling reaction. (C) 1999 Elsevier Science Ltd. All rights reserved.
Total Synthesis of Clavepictines A and B. Diastereoselective Cyclization of δ-Aminoallenes
作者:Jae Du Ha、Jin Kun Cha
DOI:10.1021/ja9925958
日期:1999.11.1
The stereocontrolled total synthesis of (−)-clavepictine A (1A) and (+)-clavepictine B (1B) has been accomplished in an enantioselective fashion, which has unequivocally established the absolute configuration of 1A and 1B. The pivotal step in the synthesis is diastereoselective silver(I)-promoted cyclization of δ-amino allenes. Another key method includes cross-coupling of enol triflates of N-acyl