๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

A revised structure for pterocarpin

โœ Scribed by J. B-son Bredenberg; James N. Shoolery

Publisher
Elsevier Science
Year
1961
Tongue
French
Weight
152 KB
Volume
2
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

โœฆ Synopsis

THE recent isolation of the antifungal glucoside trifolirhizin and its aglycone from Trifolium uratense L. 132 and the methylation of the aglycone to pterocarpin has drawn our attention to the structure of the latter compound. Tine subfamily Papilionatae is known as a rich source of isoflavanoid substances. A literature scrutiny of 2 '-oxygenated isoflavanoids that have a dimethoxy or a methylenedioxy group in the B-ring revealed an interesting observation.

All the investigated substances (rotenoid type compounds, 394 pachyrrhizin, jamaicin,6 '5 erosnin, 7 sophorol') except pterocarpin have the

๐Ÿ“œ SIMILAR VOLUMES

A revised structure for acetylheliosupin
A revised structure for acetylheliosupine
โœ James F. Resch; Jerrold Meinwald ๐Ÿ“‚ Article ๐Ÿ“… 1982 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 165 KB
A revised structure for tagetitoxin
A revised structure for tagetitoxin
โœ Robin E. Mitchell; Jan M. Coddington; Harry Young ๐Ÿ“‚ Article ๐Ÿ“… 1989 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 179 KB
A revised structure for cycloprodigiosin
A revised structure for cycloprodigiosin
โœ Hartmut Lattasch; Ronald H. Thomson ๐Ÿ“‚ Article ๐Ÿ“… 1983 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 145 KB

The structure of cycloprodigiosin has been revised from 2 to 4 in which the side -chain is cyclised to form a six-membered ring.

A revised structure for plumbazeylanone
A revised structure for plumbazeylanone
โœ G.M.Kamal B. Gunaherath; A.A.Leslie Gunatilaka; Philip J. Cox; R.Alan Howie; Ron ๐Ÿ“‚ Article ๐Ÿ“… 1988 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 88 KB

The structure of plumbazeylanone has been revised, by X-ray crystallography, to 1,2,3,4-tetrahydro-5-hydroxy-l,4-diketo-2-methyl-2,3-di(5'-hydroxy-2'-methyl-l,4-naphthoquinon-3'-yl)naphthalene.

Revised structure for siderin
Revised structure for siderin
โœ P. Venturella; A. Bellino; F. Piozzi ๐Ÿ“‚ Article ๐Ÿ“… 1974 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 176 KB

Some years ago, during a search for diterpenes on Sideritis romana L. (Labiatae), we extracted a very small amount (5 mg) of a C12H,204 product, m.p. 194-1950, that on the basis of MS, IR, UV and NMR data was tentatively regarded as a methyl-dimethoxy-coumarin. As the compound was available in too l