摘要:
Novel compounds of formula (I), processes for their preparation, and their use as pharmaceutical agents are described: ##STR1## in which p represents an integer of 2 to 4; r represents an integer of 1 or 2; s represents 0 or 1; and X represents a group ##STR2## in which A.sub.1 is oxygen or sulphur, one of A.sub.2 and A.sub.3 is CR.sub.1 and the other is nitrogen or CR.sub.2, or A.sub.2 is oxygen or sulphur, A.sub.1 is CH and A.sub.3 is CR.sub.1, where R.sub.1 and R.sub.2 are independently selected from hydrogen and C.sub.1-2 alkyl, with the proviso that when r is 2, R.sub.1 and R.sub.2 are hydrogen or methyl. The novel compounds of this invention may be used to treat or to prevent dementia in mammals.
摘要:
A method is provided for the treatment and/or prophylaxis of cardiovascular diseases in a human or non-human mammal, which comprises administering to a human or non-human mammal in need thereof, an effective, non-toxic amount of a compound of formula (I): ##STR1## or a tautomeric form thereof and/or a pharmaceuticlaly acceptable salt thereof and/or a pharmaceutically acceptable solvate thereof, in which A.sup.1 represents a substituted or unsubstituted aromatic heterocyclyl group; R.sup.1 represents a hydrogen atom, an alkyl group, an acyl group, an aralkyl group, wherein the aryl moiety may be substituted or unsubstituted, or a substituted or unsubstituted aryl group; R.sup.2 and R.sup.3 each represent hydrogen, or R.sup.2 and R.sup.3 together represent a bond; A.sup.2 represents a benzene ring having in total up to five substituents; and n represents an integer in the range of from 2 to 6.
摘要:
7 .alpha.-formamido cephalosporin derivatives having a 3[N-(optionally substituted)aminothiopyridinium thiomethyl] substituent have anti-bacterial activity and are of use in anti-bacterial therapy. Processes for the preparation thereof and intermediates for use in these processes are also disclosed.
摘要:
A compound of formula (I): ##STR1## or a pharmaceutically acceptable salt, ester or amide thereof, or a pharmaceutically acceptable solvate thereof, wherein:Z represents a residue of a substituted or unsubstituted aryl group,A.sub.1 represents a substituted or unsubstituted methylene group or a substituted or unsubstituted ethylene group;A.sub.2 represents a substituted or unsubstituted methylene group or a substituted or unsubstituted ethylene group;providing that at least one of A.sup.1 or A.sup.2 represents a substituted methylene group or a substituted ethylene group,X represents O or NR.sup.o wherein R.sup.o represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, an alkanoyl group substituted or unsubstituted in the alkyl moiety, or an arylalkyl moiety substituted or unsubstituted in the aryl moiety,p represents an integer 2 or 3, andq represents an integer in the range of from 1 to 12;a process for preparing such a compound, a composition comprising such a compound and the use of such a compound in medicine.
摘要:
Compounds of formula (I) and pharmaceutically acceptable salts thereof: ##STR1## wherein R.sub.1 is hydrogen or hydroxy; andR.sub.2 is C.sub.1-6 alkyl;which are pro-drugs for 9-(3-hydroxyprop-1-oxy)guanine having antiviral activity, a process for their preparation and their use as pharmaceuticals.
摘要:
Compounds of formula (I) and pharmaceutically acceptable salts thereof: ##STR1## wherein a, b, J, Y and R.sub.2 -R.sub.8 are as defined herein are potassium channel activators, a process for their preparation and their pharmaceutical use.
摘要:
Compounds of formula (I) and pharmaceutically acceptable salts thereof: ##STR1## wherein L is NH;X and Y are independently selected from hydrogen or C.sub.1-4 alkyl, or together are a bond;R.sub.1 and R.sub.2 are independently selected from hydrogen, C.sub.1-6 alkyl, C.sub.2-6 alkenyl-C.sub.1-4 alkyl, or together are C.sub.2-4 polymethylene;R.sub.3 and R.sub.4 are independently selected from hydrogen, halogen, CF.sub.3, C.sub.1-6 alkyl, C.sub.1-6 alkoxy, C.sub.1-6 alkylthio, C.sub.1-7 acyl, C.sub.1-7 acylamino, C.sub.1-6 alkylsulphonylamino, N-(C.sub.1-6 alkylsulphonyl)-N-C.sub.1-4 alkylamino, C.sub.1-6 alkylsulphinyl, hydroxy, nitro or amino, aminocarbonyl, aminosulphonyl, aminosulphonylamino or N-(aminosulphonyl)-C.sub.1-4 alkylamino optionally N-substituted by one or two groups selected from C.sub.1-6 alkyl, C.sub.3-8 cycloalkyl, C.sub.3-8 cycloalkyl C.sub.1-4 alkyl, phenyl or phenyl C.sub.1-4 alkyl groups or optionally N-disubstituted by C.sub.4-5 polymethylene;Z is a group of formula (a) ##STR2## wherein n is 2 or 3;p is 1 or 2;q is 1 to 3;r is 1 to 3; andR.sub.5 or R.sub.6 is C.sub.1-7 alkyl, C.sub.3-8 cycloalkyl, C.sub.3-8 cycloalkyl-C.sub.1-2 alkyl or C.sub.2-7 alkenyl-C.sub.1-4 alkyl;having 5-HT M-receptor antagonist activity.
摘要:
Novel compounds of formula (I), and pharmaceutically acceptable salts thereof; their preparation; compositions containing them; and their use in the treatment of conditions in which degradation of connective tissue and other proteinaceous components of the body occurs: ##STR1## in which, R.sub.1 is --OH; alkoxy; aryloxy or aralkyloxy in each of which the aryl group is optionally substituted; --NR.sub.6 R.sub.7, where each of R.sub.6 and R.sub.7 is independently hydrogen or alkyl, or R.sub.6 and R.sub.7 together with the nitrogen atom to which they are bonded form a 5-, 6- or 7-membered ring with an optional oxygen or sulphur atom or an optionally substituted second nitrogen atom in the ring; or a group:--NH--CH(R.sub.8)--C(O)--R.sub.9where R.sub.8 is hydrogen; alkyl optionally substituted by --OH, alkoxy, --NR.sub.6 R.sub.7 as defined for R.sub.1, guanidine, --CO.sub.2 H, --CONH.sub.2, --SH, or --S--alkyl; or --CH.sub.2 --Ar where Ar is optionally substituted aryl or heteroaryl; and R.sub.9 is alkoxy; --OH; or --NR.sub.6 R.sub.7 as defined for R.sub.1 ; R.sub.2 is hydrogen; C.sub.2-8 alkanoyl; or optionally substituted aroyl; R.sub.3 is C.sub.3-6 alkyl; and R.sub.4 is --(CH.sub.2).sub.m -- where m is an integer from 4 to 12.