Calamistrins H and I, two linear annonaceous acetogenins from the roots of Uvaria calamistrata Hance.

[摘要]：Two linear Annonaceous acetogenins, calamistrins H (I) and I (1 and 2) were isolated from an ethanolic ext. of the roots of Uvaria calamistrata Hance (Annonaceae) with silica gel column and preparative HPLC. ring on the chain. The structures of 1 and 2 were detd. by spectroscopic anal. (NMR and MS) and chem. derivs.

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