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New Triterpenoid and Ergostane Glycosides from the Leaves of Hydrocotyle umbellata L.

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Abstract:

Abstract Two new triterpenoid glycosides, together with two new ergostane glycosides, umbellatosides A–D ( 1 – 4 , resp.), have been isolated from the leaves of Hydrocotyle umbellata L. Their structures were established by 2D‐NMR spectroscopic techniques ( 1 H, 1 H‐COSY, TOCSY, NOESY, HSQC, and HMBC) and mass spectrometry as 3 β ,22 β ‐dihydroxy‐3‐ O ‐[ α ‐ L ‐rhamnopyranosyl‐(1→2)‐ β ‐ D ‐glucuronopyranosyl]olean‐12‐en‐28‐oic acid 28‐ O ‐ β ‐ D ‐glucopyranosyl ester ( 1 ), 3‐ O ‐[ α ‐ L ‐rhamnopyranosyl‐(1→2)‐ β ‐ D ‐glucuronopyranosyl]oleanolic acid 28‐ O ‐ β ‐ D ‐glucopyranosyl ester ( 2 ), (3 β ,11 α ,26)‐ergosta‐5,24(28)‐diene‐3,11,26‐triol 3‐ O ‐( β ‐ D ‐glucopyranosyl)‐11‐ O ‐( α ‐ L ‐rhamnopyranosyl)‐26‐ O ‐ β ‐ D ‐glucopyranoside ( 3 ), and (3 β ,11 α ,21,26)‐ergosta‐5,24(28)‐diene‐3,11,21,26‐tetrol 3‐ O ‐( β ‐ D ‐glucopyranosyl)‐11‐ O ‐( α ‐ L ‐rhamnopyranosyl)‐26‐ O ‐ β ‐ D ‐glucopyranoside ( 4 ).

Tópico:

Natural product bioactivities and synthesis

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Citations: 12
12

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Información de la Fuente:

SCImago Journal & Country Rank
FuenteHelvetica Chimica Acta
Cuartil año de publicaciónNo disponible
Volumen94
Issue10
Páginas1850 - 1859
pISSNNo disponible
ISSN1522-2675

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