Polyhydroxylated pyrrolizidines. Part 2: The first total synthesis of (+)-hyacinthacine A3
作者:Isidoro Izquierdo、Marı́a T. Plaza、Francisco Franco
DOI:10.1016/s0957-4166(02)00408-1
日期:2002.8
The first total synthesis for the (+)-hyacinthacine A31 in a highly stereocontrolled manner, is reported herein. An appropriately protected polyhydroxylated pyrrolidine, such as (2R,3R,4R,5R)-3,4-dibenzyloxy-N-tert-butyloxycarbonyl-2′-O-tert-butyldiphenylsilyl-2,5-bis(hydroxymethyl)pyrrolidine 2, (DMDP protected), readily available from d-fructose, was chosen as the homochiral starting material. The
本文报道了以高度立体可控的方式进行的(+)-乙酰草氨酸A 3 1的第一总合成。适当保护的多羟基化的吡咯烷,如(2 - [R,3 - [R,4 - [R,5 - [R)-3,4- dibenzyloxy- ñ -叔丁氧基羰基-2'- ø -叔-butyldiphenylsilyl -2,5-双(羟甲基可以很容易地从d-果糖获得的)吡咯烷2(DMDP保护的)被选作同手性原料。天然1的绝对构型也得到明确确定。