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Updated: Jul 25, 2026

Isolation and Compositional Analysis of Plant Cuticle Lipid Polyester Monomers
Published on: November 22, 2015
Two undescribed steroids from Munronia pinnata (Wall.) W. Theob
Wen-Jian Gu1, Jin-Qin Ying1, Mei-Hua Huang1
1Research Center for Traditional Chinese Medicine Resources and Ethnic Minority Medicine, Jiangxi University of Chinese Medicine, Nanchang, China.
Abstract:
Two undescribed steroids, named (15 R)-2,15-dihydroxypregna-1,4-dien-3,16-dione (1) and 2,15-dihydroxypregna-1,4,14-trien-3,16-dione (2), were isolated from the aerial parts of Munronia pinnata (Wall.) W. Theob. The structure elucidation of two compounds was performed by using spectroscopic methods and comparing the literature. Compound 2 exhibited inhibitory effect against PTP-1B with an IC50 value of 152.07 ± 3.33 μM, and compound 1 was inactive.
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