Laboratory of Aquatic Natural Products Chemistry, Graduate School of Agricultural and Life Sciences, University of Tokyo , Yayoi, Bunkyo, Tokyo 113-8657, Japan.
Japan Science and Technology Agency-Core Research for Evolutional Science and Technology (CREST) , Gobancho, Chiyoda, Tokyo 102-0076, Japan.
J Nat Prod. 2017 Apr 28;80(4):953-958. doi: 10.1021/acs.jnatprod.6b00934. Epub 2017 Mar 23.
Three cyclic C botryococcenes and one new trimethylsqualene isomer were isolated from the B race, Showa (Berkeley) strain of Botryococcus braunii, which is known to produce large amounts of isoprenoid hydrocarbons ranging in carbon number from 30 to 34. Their purity was determined by GC-MS, and structures were characterized by 1D and 2D NMR. One of these molecules, cyclic C-1 botryococcene (5), has an unusual connection of a methylenecyclohexane ring to the molecule backbone not seen before in botryococcenes. This report further adds to our knowledge of the wide range of isoprenoid hydrocarbon structures produced by B. braunii.
从产大量碳数在 30 到 34 的类异戊二烯烃的 Showa（伯克利）株 Botryococcus braunii 的 B 系中分离到三个环丙型 Botryococcenes 和一个新的角鲨烯三甲基异构体。它们的纯度由 GC-MS 确定，结构由 1D 和 2D NMR 确定。这些分子之一，环丙型 C-1 Botryococcene（5），具有一个亚甲基环己烷环与分子主链的不寻常连接，这在 Botryococcenes 中以前没有见过。本报告进一步增加了我们对 B. braunii 产生的广泛的类异戊二烯烃结构的认识。
