摘要:
Intermediate compounds for the preparation of endothelin-receptor antagonist triterpene compounds have the formula
wherein R 2 is hydrogen or -R 3- R 4 wherein R 3 is -SO 3 -, -CH 2 COO-, -COCOO-, or -COR 5 COO- wherein R 5 is C 1 - C 6 alkylene or up to C 6 alkenylene, R 4 is hydrogen, straight or branched C 1 - C 6 alkyl and R 6 is t-butoxycarbonyl or hydrogen, or a pharmaceutically acceptable salt thereof.
摘要:
Beansprucht wird ein Verfahren zur Herstellung von Amidosäurephenylestern der Formel durch Umsetzung einer Verbindung der Formel mit einer Verbindung der Formel in Gegenwart eines Säurehalogenids, wobei A, R 1 , R 2 , R 3 , R 4 , R 5 , X und M die in der Beschreibung angegebenen Bedeutungen haben. Die erhaltenen Amidosäurephenylester werden als Bleichaktivatoren in Wasch- und Reinigungsmitteln eingesetzt.
摘要:
A process for producing a compound of the formula (I): wherein R 1 and R 2 are the same or different and are hydrogen or alkyl, and R is hydrogen or alkyl, which comprises removing the protective group (P) of hydroxyl of a compound of the formula (II): wherein P is a protective group of hydroxyl, ∼ indicates an E-isomer, Z-isomer or a mixture thereof, and the other symbols are as defined above; and an intermediate for the production of the compound of the formula (I).
摘要:
This invention relates to a novel class of immunosuppressive compounds having an affinity for the FK-506 binding protein (FKBP). Once bound to this protein, the immunosuppressive compounds inhibit the prolyl peptidyl cis-trans isomerase (rotamase) activity of the FKBP and inhibit T cell activation. As such, the compounds of this invention can be used as immunosuppressive drugs to prevent or significantly reduce graft rejection in bone marrow and organ transplantations and for use in the treatment of a wide variety of autoimmune diseases in humans and other mammals.
摘要:
The present invention provides a method for acylating one or more amino groups of a peptide where the acylation reaction is to be performed in an aqueous mixture containing less than 10 %w/w aprotic polar solvent.
摘要:
The present invention provides a method for acylating one or more amino groups (typically arising from lysine) of a peptide (or protein), e.g. GLP-1, the method comprising (a) reacting a peptide (or protein) having at least one free amino group with an acylating agent of general formula (I) wherein n is 0-8; R1 is COOR4; R2 is a lipophilic moiety, e.g. selected from C¿3-39?-alkyl, C3-39-alkenyl, C3-39-alkadienyl and steroidal residues; R?3¿ together with the carboxyl group to which R3 is attached designa te a reactive ester or a reactive N-hydroxy imide ester; and R4 is selected from hydrogen, C¿1-12?-alkyl and benzyl,under basic conditions in a mixture of an aprotic polar solvent and water (e.g. N-methyl-2-pyrrolidone and water); and (b) if R?4¿ is not hydrogen, saponifying the acylated peptide ester group (COOR4) under basic conditions (e.g. at a pH in the range of 7-14); in order to obtain an N-acylated peptide (or an N-acylated protein).