Calvasterols A (14 alpha-hydroxyergosta-4,7,9,22-tetraen-3,6-dione) and B (9 alpha,14 alpha-dihydroxyergosta-4,7,22-trien-3,6-dione), two new steroids, have been isolated from Calvatia cyathiformis. Their molecular structures have been defined by spectroscopic means and chemical correlations.
Natural product derivatives as food supplements and pharmaceuticals
申请人:Amato K. Daniel
公开号:US20050191385A1
公开(公告)日:2005-09-01
Then present invention provides new and useful derivatives of phyto-derived tetracyclic compounds possessing steroidal-like activity, and in some instances both amino acid/oligo-peptide and steroidal-like activity, uses thereof and methods of production.
Synthesis of (22E,24R)-ergosta-4,7-22-triene-3,6-dione and its 14α-hydroxy- and 9α,14α-dihydroxy derivatives
作者:N. V. Kovganko、S. N. Sokolov
DOI:10.1007/bf02234854
日期:1999.5
Delta(4,7)-3,6-Diketosteroids have been synthesized from ergosterol (I).
Two steroids from Calvatia cyathiformis
作者:Nobuo Kawahara、Setsuko Sekita、Motoyoshi Satake
DOI:10.1016/0031-9422(94)00740-k
日期:1995.3
Calvasterols A (14 alpha-hydroxyergosta-4,7,9,22-tetraen-3,6-dione) and B (9 alpha,14 alpha-dihydroxyergosta-4,7,22-trien-3,6-dione), two new steroids, have been isolated from Calvatia cyathiformis. Their molecular structures have been defined by spectroscopic means and chemical correlations.