Amberene and 1-methylamberene, isolated and identified from Kuji amber (Japan). (June 2018)

• Record Type: Journal Article
• Authors: Kawamura, Tetsuaki; Koshino, Hiroyuki; Nakamura, Takemichi; Nagasawa, Yoshiyuki; Nanao, Hidetaka; Shirai, Masayuki; Uesugi, Shota; Ohno, Misa; Kimura, Ken-ichi
• Is Part Of: Organic geochemistry. Volume 120(2018)
• Page Start: 12
• Page End: 18
• Publication Date: 2018-06
• Subjects: Kuji amber -- Amberene (15, 19, 20-trinor-5, 7, 9-labdatriene) -- 1-Methylamberene (15, 20-dinor-5, 7, 9-labdatriene); Organic geochemistry -- Periodicals; Biogeochemistry -- Periodicals; Géochimie organique -- Périodiques; 553.205
• DOI: 10.1016/j.orggeochem.2018.02.014
• Languages: English
• ISSNs: 0146-6380

Abstract

Abstract: Abundant labdatriene derivatives, named amberene [15, 19, 20-trinor-5, 7, 9-labdatriene (or 1, 6-dimethyl-5-isopentyltetralin) (1 )] and 1-methylamberene [15, 20-dinor-5, 7, 9-labdatriene (or 1, 1, 6-trimethyl-5-isopentyltetralin) (2 )] were isolated from the methanol extract of Kuji amber by HPLC. The structures were elucidated by spectral analyses including EIMS, 1D and 2D NMR and some previous assignments corrected.