A comparison of mechanisms proposed for the conversion of mitomycins into mitosenes
作者:Bhashyam S. Iyengar、William A. Remers
DOI:10.1021/jm00145a021
日期:1985.7
correct one. The products of these reactions had considerable variation in the ratios of cis to trans isomers: 7-aminomitosanes gave a predominance of trans and 7-methoxymitosanes gave a predominance of cis. Treatment of mitomycin C with DCl in D2O gave predominantly cis product with about 45% deuterium exchange at C-1. The isomeric 2,7-diamino-1-methoxymitosenes previously obtained by treating mitomycin
通过氘掺入方法研究了提出的将丝裂霉素酸催化转化为丝氨酸的两种机理。四种不同的丝裂霉素,叠氮基丝裂胺和N-乙酰丝裂霉素均在乙酸-d中进行了转化,并且在C-1处未引入氘。该证据表明,基于最初消除甲醇元素以生成叠氮基叠氮基的机理更可能是正确的。这些反应的产物在顺式与反式异构体的比例上有相当大的变化:7-氨基米松酮占优势,而7-甲氧基米松酮占优势。在D 2 O中用DC1处理丝裂霉素C主要得到在C-1处具有约45%氘交换的顺式产物。异构体2