Stereoselective syntheses of deuterium labelled marmesins; valuable metabolic probes for mechanistic studies in furanocoumarin biosynthesis
摘要:
Stereoselective syntheses of deuterium labelled marmesins 3a-3e as metabolic probes for biosynthetic studies are described. Starting from iodo-umbelliferone (5), the title compounds were readily available by copper catalysed alkylation-cyclisation and subsequent transfer-hydrogenation of the resulting furanocoumarins 6a-6e. The bioconversion of marmesin by a microsomal preparation of A. majus yielded psoralene (4) and acetone in a single step and proceeded as a syn-elimination of the alkoxy-substituent together with a single hydrogen atom from a vicinal carbon atom (beta-cleavage). (C) 1997 Elsevier Science Ltd.
An efficient synthesis of linear and angular furanocoumarins has been carried out starting from iodoumbelliferone derivatives. First synthesis of 6-iodoumbelliferone is described. The average yields are higher than those reported before.
King et al., Journal of the Chemical Society, 1954, p. 1392,1395
作者:King et al.
DOI:——
日期:——
An efficient synthesis of furanocoumarins
作者:Eva Zubía、Francisco Rodríguez Luis、Guillermo M. Massanet、Isidro G. Collado
DOI:10.1016/s0040-4020(01)92200-8
日期:1992.1
An efficient synthesis of linear and angular furanocoumarins has been carried out starting from iodoumbelliferone derivatives. First synthesis of 6-iodoumbelliferone is described. The average yields are higher than those reported before.
Stereoselective syntheses of deuterium labelled marmesins; valuable metabolic probes for mechanistic studies in furanocoumarin biosynthesis
作者:Volker Stanjek、Martin Miksch、Wilhelm Boland
DOI:10.1016/s0040-4020(97)10237-x
日期:1997.12
Stereoselective syntheses of deuterium labelled marmesins 3a-3e as metabolic probes for biosynthetic studies are described. Starting from iodo-umbelliferone (5), the title compounds were readily available by copper catalysed alkylation-cyclisation and subsequent transfer-hydrogenation of the resulting furanocoumarins 6a-6e. The bioconversion of marmesin by a microsomal preparation of A. majus yielded psoralene (4) and acetone in a single step and proceeded as a syn-elimination of the alkoxy-substituent together with a single hydrogen atom from a vicinal carbon atom (beta-cleavage). (C) 1997 Elsevier Science Ltd.