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[The isolation and identification of four new 2, 2-dimethylchromenes]
1State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 200031.
Yao Xue Xue Bao = Acta Pharmaceutica Sinica
|October 13, 2001
Abstract:
Four new 2, 2-dimethylchromenes named leptol B (I), ethylleptol B (II), methylleptol B (III), leptene B (IV), along with a known chromene-methylevodionol (V) have been isolated from the aerial parts of Evodia lepta. Their structures were elucidated by spectroscopic analysis and chemical techniques.