A novel ecdysteroid, for which the name bombycosterol is proposed, has been isolated from the ovaries of the silkworm Bombyx mori and its structure was determined as (20S)-Cholesta-7,14-diene-3β,5α,6α,20,25-pentaol (1) by spectroscopic means and 1H n.m.r. comparison with a reference compound (3).
Y. Fujimoto, S. Miyasaka, T. Ikeda, N. Ikekawa, E. Ohnishi, T. Mizuno and K. Watanabe, J. Chem. Soc., Chem. Commun., 1985, 10 DOI: 10.1039/C39850000010
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