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. 2015;29(15):1426-31.
doi: 10.1080/14786419.2014.1003186. Epub 2015 Jan 23.

New pregnane glycoside derivative from Caralluma retrospiciens (Ehrenb)

Mahmoud Fahmi Elsebai  1 , Ietidal El-Tahir Mohamed
Affiliations

New pregnane glycoside derivative from Caralluma retrospiciens (Ehrenb)

Mahmoud Fahmi Elsebai et al. Nat Prod Res. 2015.

Abstract

Retrospinoside (1) is a new polyoxy pregnane glycoside which was isolated and characterised from the aerial parts of Caralluma retrospiciens (Ehrenb.) N. E. Br., family Apocynaceae. The structure was established as 3-O-[β-D-glucopyranosyl-(1 → 4)-β-D-(3-O-methyl-6-desoxygalactopyranosy)]-14,15,20-trihydroxy-4β-pregnane. Its structural elucidation was performed through extensive spectroscopic measurements including 1D- and 2D-NMR, and HRMS, in addition to chemical methods.

Keywords: Caralluma retrospiciens; plant natural products; polyoxy pregnanes; pregnane glycosides.

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