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January 1, 1994Bulletin of the Chemical Society of Japan

Crystal Structures of 5α,6α-Epoxy and 2,3-Dihydro Derivatives of Physalin B, a 13,14-Seco-16,24-cyclosteroid, and Their 1H NMR Spectral Analysis

Masao Kawai Bunsho Makino Tooru Taga Yoshihisa Miwa Tatsuo Yamamoto Tsunehiro Furuta Hatsuo Yamamura Yasuo Butsugan Kiyoshi OGAWA Mitsuo Hayashi

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Abstract

X-Ray crystallographic analysis of two steroid derivatives, 5α,6α-epoxyphysalin B and 2,3-dihydrophysalin B, have been undertaken, revealing their closely similar crystal structures to each other. Their 1H NMR spectra, as well as that of the parent compound physalin B, a 13,14-seco-16,24-cyclosteroid from Physalis alkekengi, have been analyzed based on the crystal structures of these derivatives.

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Kawai et al. (1994) studied this question.

synapsesocial.com/papers/6ab4b0945741adedf4b0abd2 https://doi.org/10.1246/bcsj.67.222

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