Studies in Cell Suspension Cultures of Cassia didymobotrya. Part VI. The Biotransformation of Chalcones to Aurones and Auronols
摘要:
Cell-free extracts derived from tissue cultures of Cassia didymobotrya, which previously had been reported to convert 4-hydroxychalcones to flavones and biflavanones, catalyze the biotransformation of 2-hydroxychalcones to aurones and auronols. The aurone was shown to be the direct precursor of auronol.
Studies in Cell Suspension Cultures of Cassia didymobotrya. Part VI. The Biotransformation of Chalcones to Aurones and Auronols
摘要:
Cell-free extracts derived from tissue cultures of Cassia didymobotrya, which previously had been reported to convert 4-hydroxychalcones to flavones and biflavanones, catalyze the biotransformation of 2-hydroxychalcones to aurones and auronols. The aurone was shown to be the direct precursor of auronol.
Biosynthesis of optically active Diels–Alder type adducts revealed by an aberrant metabolism of O-methylated precursors in Morus alba cell cultures
作者:Yoshio Hano、Taro Nomura、Shinichi Ueda
DOI:10.1039/c39900000610
日期:——
Addition of O-methylated chalcone, as precursors, to Morusalbacellcultures has resulted in the formation of opticallyactive O-methyl derivatives of chalcomoracin (1) and kuwanon J (2), corroborating the pivotal step of the biosynthesis of (1) and (2) to be the enzymic Diels–Alder reaction.