申请人:Schering Corporation
公开号:US04078139A1
公开(公告)日:1978-03-07
The process for removing a secondary hydroxyl group from an organic compound having at least one secondary hydroxyl group and having any amino groups protected, comprises the reaction of a reactive ester of said secondary hydroxyl group selected from the group consisting of an O-alkylthioester and an O-alkylselenoester with at least one mole of an organotin hydride, preferably tri-n-butylstannane, in an inert, aprotic solvent at a temperature of at least about 100.degree. C and under an inert atmosphere. The process is particularly useful in removing secondary alcohols in aminoglycoside antibiotics to produce deoxy derivatives thereof having antibacterial activity. Also described are novel O-sec.-alkylthiobenzoate, O-sec.-alkyl-S-methylxanthate, N-(sec.-alkoxythiocarbonyl)-imidazole esters, and di-O-alkylthiocarbonates having at least one secondary O-alkyl group, useful intermediates of the claimed process.
将至少具有一个次级羟基且具有任何氨基保护的有机化合物中的次级羟基团从中去除的过程,包括将所述次级羟基团的反应性酯(所选自O-烷基硫酯和O-烷基硒酯组成的群)与至少一摩尔的有机锡氢化物(优选为三正丁基锡烷)在惰性、无极性溶剂中,在至少约100摄氏度的温度下,在惰性气氛下反应。该过程特别适用于去除氨基糖苷类抗生素中的次级醇,以产生具有抗菌活性的去氧衍生物。还描述了新颖的O-sec.-烷基硫代苯甲酸酯、O-sec.-烷基-S-甲基黄原酸酯、N-(sec.-烷氧硫代羰基)-咪唑酯和至少具有一个次级O-烷基基团的双O-烷基硫代碳酸酯,这些是所述过程的有用中间体。