[The isolation and identification of four new 2, 2-dimethylchromenes].
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.
Li
G L
GL
State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 200031.
Zeng
J F
JF
Zhu
D Y
DY
D001578:Benzopyrans / Q000737:chemistry / Q000302:isolation & purification*; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D019684:Magnoliopsida / Q000737:chemistry; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry*
D001578:Benzopyrans; D004365:Drugs, Chinese Herbal; C442151:ethylleptol B; C442150:leptol B