8-Methoxypsoralen-nucleic acid photoreaction. Effect of methyl substitution on pyrone vs. furan photoaddition
作者:David Kanne、Henry Rapoport、John E. Hearst
DOI:10.1021/jm00370a017
日期:1984.4
We have synthesized a series of 8-[3H]methoxypsoralens in which methyl and hydrogen are systematically varied at the 4- and 5'-positions. Analysis of the products resulting from the photoaddition of these four psoralens with the nucleic acid poly(dA-dT) reveals that the product distribution depends on the presence or absence of a 4-methyl substituent. Compounds with the 4-methyl group show an overwhelming
我们合成了一系列的8- [3H]甲氧基补骨脂素,其中的甲基和氢在4-和5'-位上系统地变化。对这四种补骨脂素与核酸聚(dA-dT)的光加成反应产生的产物的分析表明,产物的分布取决于4-甲基取代基的存在与否。具有4-甲基的化合物显示出对呋喃双键加成的压倒性优势(约98%),而没有4-甲基的化合物显示出对吡喃酮双键的加成量大(约18%)。