摘要:
4-R.sup.4 -R.sup.5 -2-Saccharinylmethyl aryl carboxylates, useful in the treatment of degenerative diseases, are prepared by reacting a 4-R.sup.4 -R.sup.5 -2-halomethylsaccharin with an arylcarboxylic acid in the presence of an acid-acceptor.
摘要:
A compound having the formula: ##STR1## wherein Ar, R.sup.4 and R.sup.5 are defined herein have pharmaceutical utility as proteolytic enzyme inhibitors.
摘要:
4-R.sup.4 -R.sup.5 -2-Saccharinylmethyl aryl carboxylates, useful in the treatment of degenerative diseases, are prepared by reacting a 4-R.sup.4 -R.sup.5 -2-halomethylsaccharin with an arylcarboxylic acid in the presence of an acid-acceptor.
摘要:
4-R.sup.4 -R.sup.5 -2-Saccharinylmethyl aryl carboxylates, useful in the treatment of degenerative diseases, are prepared by reacting a 4-R.sup.4 -R.sup.5 -2-halomethylsaccharin with an arylcarboxylic acid in the presence of an acid-acceptor.
摘要:
Novel 2-substituted saccharins which inhibit the enzymatic activity of proteolytic enzymes, are useful in the treatment of degenerative diseases and have the formula 0010wherein:L is --O--, --S--, --SO-- or --SO.sub.2 --; m and n are each independently 0 or 1; R.sub.1 is halo, lower-alkanoyl, 1-oxophenalenyl, phenyl or substituted phenyl, heterocyclyl or substitued heterocyclyl or, when L is --O-- and n is 1, cycloheptatrienon-2-yl or, when L is --S-- and n is 1, cyano or lower-alkoxythiocarbonyl or, when L is --SO.sub.2 -- and n is 1, lower-alkyl or trifluoromethyl; R.sub.2 is hydrogen, lower-alkoxycarbonyl, phenyl or phenylthio; and R.sub.3 and R.sub.4 are each hydrogen or various substituents and processes for preparation and pharmaceutical compositions and method of use thereof are disclosed.
摘要:
Novel 2-substituted saccharins which inhibit the enzymatic activity of proteolytic enzymes, are useful in the treatment of degenerative diseases and have the formula ##STR1## wherein: L is --O--, --S--, --SO--or --SO.sub.2 --;m and n are each independently 0 or 1;R.sub.1 is halo, lower-alkanoyl, 1-oxophenalenyl, phenyl or substituted phenyl, heterocyclyl or substituted heterocyclyl or, when L is --O-- and n is 1, cycloheptatrienon-2-yl or, when L is --S-- and n is 1, cyano or lower-alkoxythiocarbonyl or, when L is --SO.sub.2 -- and n is 1, lower-alkyl or trifluoromethyl; R.sub.2 is hydrogen, lower-alkoxycarbonyl, phenyl or phenylthio; andR.sub.3 and R.sub.4 are each hydrogen or various substituents and processes for preparation and pharmaceutical compositions and method of use thereof are disclosed.
摘要:
Novel 2-substituted saccharins which inhibit the enzymatic activity of proteolytic enzymes, are useful in the treatment of degenerative diseases and have the formula ##STR1## wherein: L is --O--, --S--, --SO-- or --SO.sub.2 --;m and n are each independently 0 or 1;R.sub.1 is halo, lower-alkanoyl, 1-oxophenalenyl, phenyl or substituted phenyl, heterocyclyl or substituted heterocyclyl or, when L is --O-- and n is 1, cycloheptatrienon-2-yl or, when L is --S-- and n is 1, cyano or lower-alkoxythiocarbonyl or, when L is --SO.sub.2 -- and n is 1, lower-alkyl or trifluoromethyl;R.sub.2 is hydrogen, lower-alkoxycarbonyl, phenyl or phenylthio; andR.sub.3 and R.sub.4 are each hydrogen or various substituents and processes for preparation and pharmaceutical compositions and method of use thereof are disclosed.
摘要:
A process is disclosed for the separation of an enantiomerically enriched 1-tosyloxy-2-acyloxy-3-butene and an enantiomerically enriched 1-tosyloxy-2-hydroxy-3-butene from a first mixture containing both compounds. The process includes the steps of:(a) forming a solution of the mixture in an organic solvent;(b) bringing the solution formed in (a) to a temperature wherein most of the enantiomerically enriched 1-tosyloxy-2-hydroxy-3-butene precipates, leaving in solution most of the enantiomerically enriched 1-tosyloxy-2-acyloxy-3-butene; and(c) separating the precipitate formed in (b) from the solution.
摘要:
In accordance with the present invention, a method for the interconvertion of the enantiomers of acyclic 1,2-dihydroxy-3-alkenes or for converting either enantiomer of acylic 1,2-dihydroxy-3-alkenes to the corresponding antipodal 1-hydroxy-2-alkoxy-3-alkene compounds has been discovered, comprising reacting in an acidic reaction media either enantiomer of an acylic vinyl epoxide (which can be derived from the corresponding acyclic 1,2-dihydroxy-3-alkene) with water, alcohol, or a mixture thereof. When substantially optically pure acyclic vinyl epoxide compounds are employed in the inventive method, the interconverted acyclic 1,2-dihydroxy-3-alkene or 1-hydroxy-2-alkoxy-3-alkene compound products are also substantially optically pure.
摘要:
The condensation reaction of a ketone with either an ester or a carbonate to form, respectively, a 1,3-diketone or a .beta.-ketoester often affords poor results under the standard condensation reaction conditions. High yields and high purities of the desired product can be obtained by performing the reaction using an alkoxide base in DMSO as the sole solvent.