Synthesis and properties of homomologated and contracted dipyrrinone analogs of xanthobilirubic acid
作者:Gisbert Puzicha、David P. Shrout、David A. Lightner
DOI:10.1002/jhet.5570270749
日期:1990.11
Dipyrrinone analogs of xanthobilirubic acid, 5-[1,5-didehydro-3-ethyl-4-methyl-5-oxo-2H-pyrrol-2-ylidene)-methyl]-2,4-dimethyl-1H-pyrrol-3-propanoic acid, with alkanoic acid chain lengths varying from formic to caproic have been synthesized as their methyl esters and characterized spectroscopically. All of the dipyrrinones studied exhibit intermolecular hydrogen bonding in chloroform, as detected by
黄胆红酸的双吡喃酮类似物5- [1,5-didehydro-3-乙基-4-甲基-5-oxo-2 H-吡咯-2-亚甲基)-甲基] -2,4-二甲基-1 H-吡咯链烷酸链长从甲酸到己酸不等的-3-丙酸已被合成为它们的甲酯,并进行了光谱表征。通过1 H-nmr检测,所有研究的二吡啶酮均在氯仿中表现出分子间氢键,并且羧基对uv可见光谱的影响随链长的增加而降低。