Two steroids from Calvatia cyathiformis
作者： Nobuo Kawahara , Setsuko Sekita , Motoyoshi Satake
DOI: 10.1016/0031-9422(94)00740-K
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摘要: Abstract Calvasterols A (14α-hydroxyergosta-4,7,9,22-tetraen-3,6-dione) and B (9α,14α-dihydroxyergosta-4,7,22-trien-3,6-dione), two new steroids, have been isolated from Calvatia cyathiformis . Their molecular structures defined by spectroscopic means chemical correlations.
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