作者:Pavel F. Vlad、Alexandru G. Ciocarlan、Mihai N. Coltsa、Alexandr V. Baranovsky、Natalya B. Khripach
DOI:10.1080/00397910802241399
日期:2008.10.28
efficient synthesis of drim-7,9(11)-diene and its hydroxylated derivates from drim-8-en-7-one. Reduction of this ketone with NaBO4 in the presence of CeCl3 · 7H2O afforded regio- and stereoselectively drim-8-en-7β-ol in a high yield. Its dehydration with H2SO4 under mild conditions led to drim-7,9(11)-diene. Noncatalytic oxidation of drim-7,9(11)-diene with OsO4 and the catalytic oxidation with the
摘要 本文描述了一种新型高效合成 drim-7,9(11)-二烯及其衍生自 drim-8-en-7-one 的羟基化衍生物。在CeCl3·7H2O 存在下用NaBO4 还原该酮以高产率提供区域选择性和立体选择性drim-8-en-7β-ol。其在温和条件下用 H2SO4 脱水生成 drim-7,9(11)-二烯。drim-7,9(11)-diene 与 OsO4 的非催化氧化和 OsO4-NMO 对的催化氧化得到高产率,取决于条件,driman-7β,8β,9α,11-tetraol 或其混合物使用 drim-7-en-9α,11-diol 和 drim-9(11)-en-7α,8α-diol。在最佳条件下,这些二醇的总收率达到了 89%。drim-7-en-9α,11-二醇和 drim-9(11)-en-7α,8α-二醇与 OsO4 的单独非催化氧化得到 driman-7α,8α