Synthesis of ambergris fragrance chemicals from sclareol, involving palladium catalysed key steps
作者:I.C. Coste-Manière、J.P. Zahra、B. Waegell
DOI:10.1016/0040-4039(88)85323-1
日期:1988.1
Ambraoxide, Ambrox ®, methylambraoxide and ambracetal are synthetised via keystepsinvolving respectively a palladium acetate catalysed elimination and a PdCl2(CH3CN)2 catalysed isomerisation of the mixture of sclareol and episclareol acetates.
Diterpenes and flavonoids as 5-alpha-reductase inhibitors
申请人:Kabushiki Kaisha Yakurigaku Chuo Kenkyusho
公开号:EP0747048A2
公开(公告)日:1996-12-11
Strong 5α-reductase inhibitors are extracted and fractionated from Thuja orientalisis and other similar crude drugs or they may be purified as diterpenes in isolated form. The inhibitors are used either on their own or as active ingredients of therapeutics in the treatment of diseases caused by the overactivity of 5α-reductase or the hypersecretion of androgens, such as male pattern baldness, androgenetic alopecia, hirsutism, acne, prostatomegaly and cancer of the prostate.