中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | (3R)-3-methyl-3-(4-methylpent-3-enyl)benzo[f]chromene-7,10-dione | 148707-54-4 | C20H20O3 | 308.377 |
—— | (+)-conocurvone | 149572-31-6 | C60H56O11 | 953.098 |
—— | 8-(3-chloro-1,4-dioxo-1,4-dihydro-naphthalen-2-yl)-9-hydroxy-3-methyl-3-(4-methyl-pent-3-enyl)-3H-benzo[f]chromene-7,10-dione | 405264-23-5 | C30H23ClO6 | 514.962 |
—— | 8-(3-chloro-1,4-dioxo-1,4-dihydro-naphthalen-2-yl)-9-methoxy-3-methyl-3-(4-methyl-pent-3-enyl)-3H-benzo[f]chromene-7,10-dione | —— | C31H25ClO6 | 528.989 |
Improved methods have been devised for the isolation of (+)-conocurvone (1) from the roots of Conospermum brachyphyllum Lindl. and for its synthesis. The isolation of (R)-(+)-9-hydroxy-3-(4′-hydroxy-4′-methylpentan-1′-yl)-3,8-dimethyl-3H-naphtho[2,1-b]pyran-7,10-dione [(+)-brachyphyllone] (2), a minor constituent of this species, its structural elucidation and partial synthesis are also described. 8-C-Methylteretifolione-B (9) and 8-C-methyl-9-O-methylteretifolione-B (10), as well as the previously isolated (+)-teretifolione-B (8), also occur in this plant.