Studies on Terpenoids Produced by Actinomycetes: Oxaloterpins A, B, C, D, and E, Diterpenes from Streptomyces sp. KO-3988
journal contributionposted on 26.11.2007, 00:00 authored by Keiichiro Motohashi, Ryoko Ueno, Masayuki Sue, Kazuo Furihata, Takuo Matsumoto, Tohru Dairi, Satoshi Omura, Haruo Seto
Following screening for terpenoids produced by Streptomyces sp. KO-3988, five new diterpenes named oxaloterpins A (1), B (2), C (3), D (4), and E (5) together with the known viguiepinone (6) were isolated from culture broth, and their structures were established on the basis of extensive NMR and MS analyses. The absolute configuration of oxaloterpin A was determined by the modified Mosher’s method as 3R, 5S, 8S, 10R, 13S.