A Simple Enantioselective Synthesis of Serratenediol
作者:Junhu Zhang、E. J. Corey
DOI:10.1021/ol016543a
日期:2001.10.1
[reaction: see text] A short synthesis of serratenediol is described, which involves a number of powerful key steps including (1) catalytic enantioselective syntheses of the phenyl sulfone and acylsilane shown above, (2) their coupling, and (3) further stereoselective cationic cyclizations.
Process for separating unsaponifiable valuable products from raw materials
申请人:——
公开号:US20030120095A1
公开(公告)日:2003-06-26
Disclosed are processes for separating valuable products, including unsaponifiable materials, from any given matrix of raw materials that is mainly composed of saponifiable components and unsaponifiable components. Preferred methods include converting sodium or potassium soaps obtained from the saponification of a starting material into metallic soaps which have a lower melting point, and when melted, have viscosity sufficiently low to enable processing such as by distillation/evaporation processes. Preferred raw materials include animal or vegetable products, as well as by-products, residues, and waste products from the processing of animal or vegetable products, such as from food processing, cellulose processing and the like. Valuable products which may be obtained by the disclosed processes include sterols, vitamins, flavonoids, and tocopherols.
PROCESS FOR SEPARATING SAPONIFIABLE AND NONSAPONIFIABLE COMPOUNDS COMPRISED IN A VEGETABLE OR ANIMAL RAW MATERIAL
申请人:Resitec Industria Quimica Ltda.
公开号:EP1458839A1
公开(公告)日:2004-09-22
HUPERZIA SERRATE (THUNB.) TREV. COMPOSITION COMPRISING COMPOUNDED HUPERZINE A AND HUPERZINE B AND METHODS FOR PREPARING IT
申请人:Xie Delong
公开号:US20070286911A1
公开(公告)日:2007-12-13
The invention is directed to the field of natural medicine, specifically to alkaloid extracts of
Huperzia serrata
(Thunb.) Trev. A
Huperzia serrata
(Thunb.) Trev. composition and the method for preparing it are provided. The
Huperzia serrata
(Thunb.) Trev. composition comprises Huperzine A and Huperzine B, wherein the total content of the said Huperzine A and Huperzine B is 50-99 wt % of total alkaloids and the weight ratio of the said Huperzine A and Huperzine B is 1:0.5-5. The
Huperzia serrata
(Thunb.) Trev. composition of the invention has good therapeutic effect and improved safety.