Chlorine-containing iridoid and iridoid glucoside, and other glucosides from leaves of Myoporum bontioides

Abstract

Sixteen compounds were isolated from the MeOH extract of leaves of Myoporum bontioides. The five compounds hitherto unknown, were elucidated to be a chlorine-containing iridoid, named myopochlorin, and an iridoid glucoside, an acylated iridoid glucoside, a linear acetogenin glucoside, and an acyclic monoterpene glucoside, named myobontiosides A-D, respectively, by means of spectroscopic analyses.

Protoberberine Alkaloids and Cancer Chemopreventive Properties of Compounds from Alangium salviifolium

“…13 C NMR resonances support the identity of the β-d-glucopyranosyl moiety. [20,21] The presence of dglucose in 5 was confirmed by enzymatic hydrolysis with β-glucosidase followed by optical rotation/HPLC analysis. The glycoside 5 could be hydrolyzed by β-glucosidase, which suggests that the sugar is β-d-glucose, because this enzyme has specificity towards β-d-glucose.…”

Constituintes químicos de Capraria biflora (Scrophulariaceae) e atividade larvicida de seu óleo essencial

“…A reação de acetilação e comparação com dados da literatura 17,18 permitiram a confirmação da proposta estrutural para a referida substância com sua respectiva estereoquímica, que foi identificada como a (1R,5S,6S,7R,8S,9S)-7-cloro-8-(hidroximetil) octa-hidrociclopenta[c]piran-1,10-oxira-5,6,8-triol (miopoclorina), já identificada anteriormente na espécie Myoporum bontioides e que está sendo reportada pela primeira vez em C. biflora, bem como seus derivados acetilados. …”

Chemical compositions and bioefficacy against Spodoptera litura of essential oil and ethyl acetate fraction from Myoporum bontioides leaves

“…[5] Previous phytochemical studies have revealed some structurally diverse chemicals from this plant, including sesquiterpenoids, iridoids, phenylethanoids, and flavonoids, some of which showed important bioactivities. [6,7] In Vietnam, this species has been found along the coastal regions of the north-eastern. [8] There is no report on the bioactivities and phytochemicals of this plant.…”