Evidence for a stereoelectronic effect in the baeyer-villiger reaction: Introducing the intramolecular reaction
作者:Sosale Chandrasekhar、Chandra Deo Roy
DOI:10.1016/s0040-4039(01)91376-0
日期:1987.1
An intramolecular Baeyer-Villiger reaction has been effected involving a conformationally-fixed intermediate which breaks down with stereoelectronic control.
The invention relates to urea compounds of the formula
wherein:
R is hydrogen, loweralkyl, aralkyl;
R1 is alkyl, substituted alkyl, optionally substituted aralkyl and heteroaralkyl;
R2 is hydrogen, optionally substituted alkyl;
R3 is hydrogen, loweralkyl;
R4 is optionally substituted alkyl; or,
R3 and R4 may be connected together to form an alkylene bridge or an optionally substituted alkylene bridge containing one sulfur atom and two to three carbon atoms, or an alkylene bridge containing a double bond or a substituted alkylene bridge or an alkylene bridge bearing a benzofusion thereto; and
the pharmaceutically acceptable salts thereof, and a process for preparing the same. Those compounds are useful as antihypertensives.
Monoclonal antibody against an acidic FGF protein, its production and use
申请人:Takeda Chemical Industries, Ltd.
公开号:EP0420081A1
公开(公告)日:1991-04-03
The present invention provides a hybrid cell line producing monoclonal antibody to an acidic fibroblast growth factor (aFGF) protein. The hybridoma is established by fusing spleen cells from immunized mice with myeloma cells. The hybridomas are cultured as clones, and antibodies obtained from the individual clones are tested for their specificity for aFGF protein.
Antibodies can be obtained from the culture growth medium or from ascitic fluid of mice bearing the hybridoma tumor. Diagnostic and therapeutic uses of the monoclonal antibody are also disclosed.