Conformational Analysis of Cycloartenol, 24-Methylenecycloartanol and Their Derivatives

Kumi YOSHIDA; Yoshihiko HIROSE; Yutaka IMAI; Tadao KONDO

doi:10.1271/bbb1961.53.1901

Agricultural and Biological Chemistry

Online ISSN : 1881-1280
Print ISSN : 0002-1369
ISSN-L : 0002-1369

Conformational Analysis of Cycloartenol, 24-Methylenecycloartanol and Their Derivatives

Kumi YOSHIDA, Yoshihiko HIROSE, Yutaka IMAI, Tadao KONDO

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JOURNAL FREE ACCESS

1989 Volume 53 Issue 7 Pages 1901-1912

DOI https://doi.org/10.1271/bbb1961.53.1901

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Abstract

A conformational analysis of cycloartenol, 24-methylenecycloartanol and their derivatives was carried out in the solution and the solid state by an NMR study and X-ray crystallographic analysis, respectively. Complete assignments of the ¹H NMR spectra of these compounds were made in order to elucidate the conformation involving the ring system and side chain. Rings A to C had a chairhalfchair-boat conformation, and the side chain had a zig-zag conformation.

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