Simple indole alkaloids and those with a nonrearranged monoterpenoid unit

Phenolic compounds from Brazilian propolis with pharmacological activities.

Lignans neolignans, and related compounds

In vitro screening of Indian medicinal plants for antiplasmodial activity.

Over the past 150 years, since Vogel in 1820 isolated the parent oxygen heterocycle, coumarin (1) from Coumarouna odorata = Dipteryx odorata (1), coumarins have been recognized as widely distributed plant products. The vast majority carry an oxygen substituent at C-7; consequently 7-hydroxycoumarin [umbelliferone, (2)], one of the most widely distributed coumarins, is often regarded as the parent, in a structural sense and also biogenetically, of a large number of the structurally more complex coumarins. A number of review articles on natural plant coumarins have appeared (154, 302, 344, 420, 525, 541, 548) since the last in this series (153), the most comprehensive, albeit dealing solely with coumarins of the Umbelliferae, being that of Nielsen in 1970 (419).

Naturally Occurring Plant Coumarins

Isolation and structure of 13,18-dehydroexcelsin, a quassinoid, and glaucarubol from Ailanthus excelsa

Moluccanin, a coumarinolignoid from Aleurites moluccana

Aleuritin, a coumarinolignoid, and a coumarin from Aleurites fordii

1-Hydroxycanthin-6-one, an alkaloid from Ailanthus giraldii

Psilotic acid, a c6c4-acid from Psilotum nudum

Suroor A. Khan

Papers

Isolation and structure of 13,18-dehydroexcelsin, a quassinoid, and glaucarubol from Ailanthus excelsa

Moluccanin, a coumarinolignoid from Aleurites moluccana

Aleuritin, a coumarinolignoid, and a coumarin from Aleurites fordii

1-Hydroxycanthin-6-one, an alkaloid from Ailanthus giraldii

Psilotic acid, a c6c4-acid from Psilotum nudum