Total synthesis of 4-(d-alanylamino)-2-amino-2,3,4-trideoxy-dl-threo-pentose (3-deoxy-dl-prumycin)
作者:Violetta Constantinou-Kokotou、Elias A. Couladouros、Minas P. Georgiadis、George Kokotos、Taxiarchis M. Georgiadis
DOI:10.1016/0008-6215(91)89015-8
日期:1991.12
in 15% total yield. Michael addition of azide anion to 2,3-dideoxy- dl -pent-2-enopyranos-4-ulose ( 3 ) and reduction in situ of the adduct afforded the key intermediates 5 and 6 . Introduction of a second azido group with inversion of configuration at C-4 afforded intermediates 14 and 17 , both of which had a threo configuration in regard to C-2 and C-4. Coupling with d -alanine and total deprotection
摘要以2-呋喃甲醇(2-糠醇,2)为原料,分十一步合成了3-Deoxy-dl-prumycin(1),总收率15%。将叠氮化物阴离子添加至2,3-二脱氧-dl -pent-2-enopyranos-4-ulose(3)的迈克尔加成反应,并就地还原加合物,得到了关键的中间体5和6。引入具有在C-4处构型反转的第二叠氮基基团得到中间体14和17,其对于C-2和C-4均具有苏式构型。与d-丙氨酸偶联并完全脱保护得到标题化合物1。