Organic Letters 2007-Oct
Chamobtusin A, a novel skeleton diterpenoid alkaloid from Chamaecyparis obtusa cv. tetragon.
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Abstrakcyjny
The novel diterpenoid alkaloid chamobtusin A (1) was isolated from the branches and leaves of Chamaecyparis obtusa cv. tetragon. Its structure and relative stereochemistry were mainly determined by MS, 2D NMR, and X-ray methods. The methanol extracts, total alkaloids of C. obtusa cv. tetragon, and chamobtusin A were tested for their cytotoxicities against A549 and K562 human tumor cell lines.
