Abstract
In our survey on the chemical composition of Chinese folk medicines, nine compounds were isolated from methanol extract of the leaves of Toricellia angulata Oliv. var. intermedia (Harms.) Hu (Corniaceae). The structures of these compounds were elucidated on the basis of NMR data analysis, which were identified as dimethyl 2-(hydroxymethyl)-5-oxocyclohexane-1,4-dicarboxylate (1), methyl succinate (2), 5-hydroxymethyl-2-furfuraldehyde (3), 7-hydroxy-6-methoxycoumarin (4), loliolide (5), (8 S)-deca-2-trans-2,9-diene-4,6-diyn-1,8-diol (6), methyl malate (7), griselinoside (8), and methyl linoleate (9), respectively. Among them, compound 1 is a new cyclohexanone derivative and given a trivial name torriangulate A, while others are categorized to be organic acids (2, 7, and 9), a coumarin derivative (4), a terpene lactone (5), a polyacetylene (6), and an iridoid glycoside (8). Compounds 3–5 were isolated from this genus for the first time and compound 9 was first identified from this species. The discovered compounds with novel or known structures further reveal the chemical basis of T. angulata var . intermedia, which lays a foundation for the development of T. angulata var . intermedia used as a traditionally folk medicine.
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