Synthetic studies relevant to biosynthetic research on vitamin B12. Part 12.1 Modification of the periphery of chlorins and isobacteriochlorins
作者:James J. De Voss、Finian J. Leeper、Alan R. Battersby
DOI:10.1039/a607852d
日期:——
Oxochlorins and dioxoisobacteriochlorins, which can be prepared from
readily synthesised porphyrins, have been used as starting materials to
develop mild, efficient methods (a) for reductive
removal of the oxo-functionality to yield chlorins and
isobacteriochlorins and (b) for attachment of an allyl
substituent at the macrocyclic carbon bearing the oxo-functionality. It
has been demonstrated that the allyl group can act as a precursor of a
propionate residue, a group commonly present in the natural
porphinoids.
氧氯化物和二氧异噻唑氯化物可以通过易于合成的卟啉制备而成,已被用作起始材料以开发温和、高效的方法:(a) 通过还原去除氧功能团以生成氯化物和异噻唑氯化物;(b) 在带有氧功能团的宏环碳上连接烯丙基取代基。已经证明,烯丙基可以作为丙酸残基的前体,而这一基团在天然卟啉类化合物中常见。