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Chemical Constituents from Cynoglossum gansuense
Author(s) -
Jin YuanPeng,
Wei XiaoNing,
Shi YanPing
Publication year - 2007
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.200790079
Subject(s) - chemistry , stereochemistry , organic chemistry
Abstract Two new alkaloids, i.e. , (2,3‐dihydro‐1‐oxo‐1 H ‐pyrrolo[1,2‐ a ]pyrrol‐7‐yl)methyl (2 S *,3 S *)‐3‐[( β ‐ D ‐glucopyranosyl)oxy]‐2‐hydroxy‐2‐(1‐methylethyl)butanoate ( 1 ) and 1,2‐dihydro‐8‐methoxy‐2‐oxoquinoline‐4‐carboxylic acid ( 2 ), were isolated from the alcoholic extract of the whole plant of Cynoglossum gansuense , together with twelve known compounds Their structures were characterized by means of spectroscopic methods, especially by 1 H‐, 13 C‐, and 2D‐NMR, as well as by HR‐MS experiments and comparison with literature data.