𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The structure of ochnaflavone, a new type of biflavone and the synthesis of its pentamethyl ether

✍ Scribed by M. Okigawa; N. Kawano; M. Aqil; W. Rahman

Publisher
Elsevier Science
Year
1973
Tongue
French
Weight
220 KB
Volume
14
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

✦ Synopsis

Hinokiflavone (I) has been reported' as the sole example of naturally occurring biflavonyl ether.

We now report a new type of biflavonyl ether isolated from Ochna squarrosa Linn. (Ochnaceae) and named ochnaflavone (II). Although biflavones so far isolated have been obtained mostly from gymnosperm, some biflavanoids 2 such as morelloflavone 3 and fukugetin4 were isolated from Guttiferae plants.

Ochnaceae is a family closely related to Guttiferae.

πŸ“œ SIMILAR VOLUMES

Synthesis of the optically pure 5,5β€³-dih
Synthesis of the optically pure 5,5β€³-dihydroxy-7,7β€³-dimethoxy-8,8β€³-biflavone and its derivatives
✍ Fang-Jie Zhang; Guo-Qiang Lin πŸ“‚ Article πŸ“… 2010 πŸ› John Wiley and Sons 🌐 English βš– 525 KB

## Abstract ( Β± )‐5,5″‐Dihydroxy‐7,7″‐dimethoxy‐8,8″‐biflavone (( Β± )‐l) was resolved into its optically pare forms __via__ the formation and recrystallization of its (2__R__)‐ and (2__S__)‐1‐(4‐toluenesulfonyl)prolylate, and the methylated derivatives of (+)‐ and (‐)‐1 were also prepared. The abso