30 なす科植物の成分 : 内在酵素による成分変化と新規配糖体について

概要

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We had obtained five steroidal glycosides including solamargine and solasonine from the fresh immature berries of Solanum nigrum L. Now, we have isolated six components SN-a-f (1-6) from the berries immersed in cold MeOH during two years without crush of the plant bodies. They have been shown to be the steroidal alkaloids oxidized selectively at C-12 or/and C-27, and are recognized to be derived from solasonine and solamargine probably by reaction of the included enzymes. While, two novel glycosides, TA-a (11) and TA-b (12), have been obtained from the fresh berries of Tubocapsicum anomalum Makino and their structures have been characterized as new C_<28> steroidal lactone glucosides possessing a novel side chain with the C-21 methyl group fused to the lactone ring such as acnistin type.
天然有機化合物討論会の論文
1986-09-09