Biosynthesis of porphyrins and related macrocycles. Part 47.1,2 Synthesis and chemistry of 2H-pyrroles (pyrrolenines) related to the proposed spiro-intermediate for porphyrin biosynthesis
作者:Craig J. Hawker、W. Marshall Stark、Alan C. Spivey、Paul R. Raithby、Finian J. Leeper、Alan R. Battersby
DOI:10.1039/a708132d
日期:——
It is proposed that the biosynthesis of uroporphyrinogen III 3, the parent precursor of the natural porphyrins, chlorins and corrins, involves a pyrrolenine 2 as a key intermediate, yet methods for the synthesis of such systems are not available. Novel routes for the synthesis of pyrrolenines by desulfurisation of unsaturated thiolactams have now been devised and the chemistry of such compounds has
有人提出,天然卟啉,二氢卟酚和柯林的母体前体尿卟啉原III 3的生物合成涉及作为主要中间体的吡咯啉2,但尚无合成此类系统的方法。现在已经设计了通过不饱和硫代内酰胺的脱硫合成吡咯烷氨酸的新途径,并且已经研究了这类化合物的化学性质。使用模型吡咯烯进行酶学实验,表明推定的中间体2的吡咯环之一的缺失导致紧密结合的丧失。