Desflavasides A-D: Four new tetrasaccharide pregnane glycosides from Desmidorchis flava. (June 2016)

• Record Type: Journal Article
• Authors: Raees, Muhammad Adil; Hussain, Hidayat; Al-Rawahi, Ahmed; Csuk, René; Al-Ghafri, Ahmed; Ur Rehman, Najeeb; Elyassi, Ali; Green, Ivan R.; Mahmood, Talat; Al-Harrasi, Ahmed
• Is Part Of: Phytochemistry letters. Volume 16(2016:Jun.)
• Page Start: 230
• Page End: 235
• Publication Date: 2016-06
• Subjects: Natural product -- Desmidorchis flava -- Pregnane glycoside; Botanical chemistry -- Periodicals; Chimie végétale -- Périodiques; 572.205
• DOI: 10.1016/j.phytol.2016.04.012
• Languages: English
• ISSNs: 1874-3900

Abstract

Graphical abstract: Highlights: Further phytochemical data on the constituents of Desmidorchis flava has been provided. Four new pregnane glycoside named deflavasides A-D were isolated. Four new structures were elucidated by 1D-, 2D-NMR, and HRESIMS experiments. These compounds possess an oligosaccharide chain comprising four sugar units. Abstract: Four new pregnane glycosides named desflavasides A-D (1–4 ) were isolated from the sap of Desmidorchis flava (N.E.Br) Meve & Liede. The structures of all new compounds were elucidated based on 1D and 2D NMR spectroscopic techniques coupled with mass spectromentry (ESIMS and HRESIMS).