Two new ergostane derivatives from Tubocapsicum anomalum (solanaceae).

Description

Two new steroidal sapogenols were obtained from the hydrolysate of the methanolic extract of the fresh aerial parts of Tubocapsicum anomalum M(akino)___=. They were found by various spectral and X-ray analyses to be ergostane derivatives having novel structures as if the lactone ring of withanolide opened and the 18-methyl group shifted to C-17.

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