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A novel terpenoid, named perovskiaol (1), was isolated from the cultured Perovskia atriplicifolia. Its structure was elucidated by comprehensive spectroscopic analysis as well as by quantum chemical computation of electronic circular dichroism spectra. Perovskiaol (1) was a novel C22 terpenoid containing a unique D‐ring simultaneously fused with rings A, B, and C, and encountered in nature for the...
Four new ent‐pimarane diterpenes were isolated from the EtOH extract of Aralia dumetorum, together with three known compounds involving ent‐pimar‐8(14),15‐dien‐19‐oic acid (5), ent‐pimar‐8(14),15‐dien‐19‐ol (6), and ent‐kaur‐16‐en‐19‐oic acid (7). By detailed analyses of the MS, IR, and NMR data, the structures of four new diterpenes were characterized as (5β,9β,10α,13α)‐pimara‐6,8(14),15‐trien‐18‐oic...
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