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Laurefucin and acetyllaurefucin, new bromo compounds from Laurencia nipponica yamada

✍ Scribed by Akio Fukuzawa; Etsuro Kurosawa; Toshi Irie

Publisher: Elsevier Science
Year: 1972
Tongue: French
Weight: 230 KB
Volume: 13
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(01)84222-2

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✦ Synopsis

An extensive study of the neutral essential oil from Laurencia nipoonica Yamada (Rhodomelaceae; Urasozo in Japanese)(2) led to isolation of a new bromo alcohol and its acetate in 0.02 and 0.0005$ yields, respectively. They are designated as laurefucin and acetyllaurefucin and are assigned structures I and II on the basis of the chemical and spectral evidence described below. Laurefucin (I), m.p. 107-108°, (a), -80°, d= 265 and 263 (M+-C5H5), was analyzed for C15H2103Br. The UV (Amax 224.5 nm (E 17,900), hinf 232 (14,100)) and IR spectra (vmaX C17H2304Br, oil, ('ID -126.5'; m/e 372 and 370 (M+), 312 and 310 (M+-AcOH), _ _ 307 and 305 (M+-C5H5); hmax 224.5 nm (E 16,900),

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