Betulin, a pentacyclic triterpene and a plant pentacyclic triterpene metabolite, can be found
in large quantities in the outer bark of the birches (Betula, Betulaceae). Betulinic acid …

Covering: 1990–2005. Previous review: Nat. Prod. Rep., 2005, 22, 487 This article reviews
the pharmacological activity of naturally occurring triterpenoids excluding the degraded …

This review covers mainly the past 25 years of research on the biological activities of lupeol,
a significant lupane-type triterpene represented in the plant, fungi and animal kingdoms …

Betulinic acid (BA) is a lupane‐type pentacyclic triterpene, distributed ubiquitously
throughout the plant kingdom. BA and its derivatives demonstrate multiple bioactivities …

Betulinic acid (BA) and its derivatives are a class of high-profile drug candidates, but their
anticancer effects on resistant cancer have rarely been reported. Although a few studies …

An important method of drug discovery is examination of diverse life forms, including
medicinal plants and natural products or bioactive compounds isolated from these sources …

Hydroxylamines and their derivatives have found a wide range of applications in organic
synthesis. 1 In this review we hope to cover the synthetic applications of N …

Covering: 1962 to 2014 Triterpenoids are natural compounds with a variety of biological
activities and are usually produced by plants as secondary metabolites. In recent decades …

Covering: January 2006 to December 2008 This article reviews the antitumor and anti-HIV
activities of naturally occurring triterpenoids, including the lupane, ursane, oleanane …

A series of new imidazole carboxylic esters (carbamates) and N-acylimidazole derivatives of
betulin and betulinic acid (14–29) have been synthesized. The new compounds were …