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A tetracyclic triterpene lactone and other constituents from the bark ofAbies firma

✍ Scribed by Reiko Tanaka; Atsuyo Inosiri; Michiko Yoneda; Toshimasa Ishida; Atsushi Numada; Shunyo Matsunaga

Publisher: Elsevier Science
Year: 1990
Tongue: English
Weight: 289 KB
Volume: 29
Category: Article
ISSN: 0031-9422
DOI: 10.1016/0031-9422(90)80196-n

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## Abstract Two new skeletal triterpene lactones, spiromarienonols A (**1a**) and B (**2a**), were isolated from the stem bark of __Abies mariesii__ Masters (Pinaceae). Based on spectral data and biogenetic considerations, their unique three‐dimensional structures were determined to be (3__R__,7__S