The synthesis and the biological activities of [alpha]-methylene-[beta]-hydroxy-[gamma]-butyrolactams and [alpha]-methylene-[beta]-hydroxy fused bicyclic lactonelactams from an epoxy diester adducts and bioactive constituents from the roots of Artocarpus Lakoocha, Diospyros Rhodocalyx, and Millingtonia Hortensis
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