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The structures of bakkenolides-B, -C and -D as determined by the use of a nuclear overhauser effect.

✍ Scribed by Nobuo Abe; Ryoichi Onoda; Kunikatsu Shirahata; Tadahiro Kato; M.C. Woods; Yoshio Kitahara; Katsuo Ro; Tozaburo Kurihara

Publisher: Elsevier Science
Year: 1968
Tongue: French
Weight: 271 KB
Volume: 9
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(01)99073-2

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✦ Synopsis

In addition to the previously reported bakkenolide-A, structure 11, and bakkenolide -B, 1,2,3 two new sesquiterpenoids, bakkenolides-C and -D, have been isolated from the bud of Petasites japonicus subsp. giganteus Kitam. The structures of the last three compounds are discussed in this communication 4 . CHCl Bakkenolide-B (II), [m.p. lOl-102",

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