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ACD/Labs Blog

The analysis of C. rotalaria extracts by UHPLC-MS in conjunction with database searching led to the isolation and structure elucidation of a series of new taurine-conjugated anthraquinones, including Comatulin A, molecular formula C20H19NO10S.

A rich source of cembrane-type metabolites has been found to be Lobophytum crassum, a soft coral from the family of Alcyoniidae. Among five new cembrane derivatives that were isolated is Lobocrassin A, molecular formula C20H29ClO4.

Jin et al studied the novel analgesics used in traditional Chinese medicine and as part of this they isolated and elucidated the structure of a novel triamine monoterpene indole alkaloid, Gelstriamine A, molecular formula C22H27N3O5.

Asperspiropene A was first reported by He et al as the second derivative of a class of compounds containing a unique six-membered ring substructure. The molecular formula was determined from the HR-MS spectrum to be C17H26O8.

Iridiod Glycoside Clerodendrum (Lamiaceae) is a genus composed of 580 species. It is found in tropical and subtropical regions and mainly includes small trees, shrubs, and herbs. Many members of the genus havebeen used in traditional medicine around the world. C. myricoides is a shrub with bluish flowers that has been used extensively in traditional...

30 years after the structure of lyaline was first proposed, a new spectroscopic analysis was performed using state-of-the-art techniques to reveal errors in the original analysis, and eventually, the correct structure.

Davidone F Sophora davidii (Franch.) belong to the family Fabaceae and are shrubs or small trees found in China. Over the years many natural products have been isolated from them, including alkaloids, steroids, lignans, phenolic acids and, mostly, flavonoids. These have been found to have varying biological activities. The chemical investigation of S. davidii which...

Trichilianone D Trichilia species, a genus of plants from the Meliaceae family, are found in tropical forests and are used in traditional medicine. This species is poorly investigated and so a phytochemical study was published just recently [1]. This included the isolation of metabolites and the testing for antileishmanial activity. The study was focused on...

Rhodimer Atilaw et al [1] have been studying the roots of Tephrosia rhodesica, a member of the tropical and subtropical Tephrosia genus consisting of more than 400 species. A new variety of flavonoids has been found in them with promising biological activities (antiplasmodial). They isolated five new compounds including rhodimer 1. Its structure was determined...

Securamine H Bryozoans belonging to the Flustridae family have been shown to be a rich source of structurally unique secondary metabolites. Hansen et al [1] examined the organic extract of Securiflustra securifrons. This resulted in the isolation of three new halogenated, hexacyclic indole-imidazole alkaloids, including securamine H(1), together with the previously known securamines C (2)...