JOURNAL 2831
Records of Natural Products
VOLUME & ISSUE
Year: 2023 Issue: 6 November-December
Year: 2023 Issue: 6 November-December
PAGES
p.1046 - 1051
p.1046 - 1051
STATISTICS
Viewed 1237 times.
Viewed 1237 times.
AUTHORS
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Cuong Viet Hoang
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Tan Quang Tu
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Lan Thi Ngoc Nguyen
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Hung Duc Nguyen
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Quan Huu Nguyen
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Mau Hoang Chu
GRAPHICAL ABSTRACT
ABSTRACT
Two new pregnane glycosides, parasiticoside A (1) and parasiticoside B (2), were isolated from the leaves of Hoya parasitica. Their structures were determined by spectroscopic analysis 1D and 2D NMR, and mass spectrometry (HR-ESI-MS in positive mode) techniques as 3β,20-dihydroxy-pregn-5-ene-3-O-β-D-fucopyranoside-20-O-β-D-glucopyranoside (1), and 3β,20-dihydroxy-pregn-5-ene-3-O-α-L-rhamnopyranosyl-(1→2)-β-D-fucopyranoside-20-O-β-D-glucopyranoside (2). These compounds are believed to be the first example of pregnane glycosides from a plant of the genus Hoya.
KEYWORDS- Hoya parasitica
- Apocynaceae
- pregnane glycoside
- parasiticoside A
- parasiticoside B
- NMR
