The reactions of trimethylhydroquinone with isoprenoid allylic alcohols catalyzed by a Pentasil type zeolite in the H-form gave trimethyl-1,4-benzoquinones with the corresponding isoprenoid group, which were subsequently transformed into the target Delta(3)-chromenes oil treatment with pyridine. Partial ozonolysis of chromenes proceeded selectively at the Delta-bond of the side chain, resulting in the corresponding chromenes with an omega-carbonyl group.
The reactions of trimethylhydroquinone with isoprenoid allylic alcohols catalyzed by a Pentasil type zeolite in the H-form gave trimethyl-1,4-benzoquinones with the corresponding isoprenoid group, which were subsequently transformed into the target Delta(3)-chromenes oil treatment with pyridine. Partial ozonolysis of chromenes proceeded selectively at the Delta-bond of the side chain, resulting in the corresponding chromenes with an omega-carbonyl group.
Tocotrienols in the treatment of hypercholesterolemia, hyperlipidemia
申请人:Bristol-Myers Squibb Company
公开号:US05217992A1
公开(公告)日:1993-06-08
This invention relates to the use of tocotrienol, gamma-tocotrienol and delta-tocotrienol in reducing hypercholesterolemia, hyperlipidemia and thromboembolic disorders in mammals. [The isolation of these tocotrienols from natural sources and their chemical synthesis is disclosed.] The chemical synthesis of these tocotrienols is disclosed. The present invention also relates to prodrugs and pharmaceutical compositions of gamma-tocotrienol, delta-tocotrienol and tocotrienol and uses thereof.