Organometallics in organic synthesis. Applications of a new diorganozinc reaction to the synthesis of C-glycosyl compounds with evidence for an oxonium-ion mechanism
作者:Alan P. Kozikowski、Toshiro Konoke、Allen Ritter
DOI:10.1016/s0008-6215(00)90882-6
日期:1987.12
features of a new organozinc-based substitution process [heteroatom-C-(R1,R2)-SPh + R3(2)Zn----heteroatom-C-(R1,R2,R3)], first discovered during a total synthesis of the alkaloid mycotoxin alpha-cyclopiazonic acid, are described. Phenyl thioglycosides were valuable substrates in studying the nature of this reaction process. Since these sulfur compounds are converted into C-glycosyl compounds with some
首次发现新的基于有机锌的取代过程[杂原子-C-(R1,R2)-SPh + R3(2)Zn ----杂原子-C-(R1,R2,R3)]的机理和立体化学特征在生物碱真菌毒素的全合成过程中,描述了α-环吡嗪酸。苯基硫代糖苷是研究该反应过程性质的有价值的底物。由于这些硫化合物以一定的立体选择性转化为C-糖基化合物,因此有机锌化学确实为这些生物活性物质提供了新的进入途径。