Pfizer Corporation

Alexander Roderick MacKenzie

Peter E Cross

Donald Stuart Middleton

Sandra Dora Meadows

Allan Patrick Marchington

Anthony Wood

Sandra Marina Monaghan

Simon F Campbell

David Alker

Robert J Bass

6-heterocyclyl pyrazolo &lsqb;3,4-d&rsqb;pyrimidin-4-one compounds which are selective inhibitors of cGMP PDE are useful in the treatment of erectile dysfunction (impotence) in male animals, including man.

6-heterocyclyl pyrazolo &lsqb;3,4-d&rsqb;pyrimidin-4-one cGMP-PDE inhibitors for the treatment of erectile dysfunction

4-aminoquinazoline derivatives which are selective inhibitors of cGMP PDE are useful in the treatment of erectile dysfunction (impotence) in male animals, including man.

4-aminoquinazoline derivative cGMP-PDE inhibitors for the treatment of erectile dysfunction

Piperidone tachykinin antagonists

The present invention provides compounds of formula (I) and the pharmaceutically acceptable salts thereof. Such compounds and salts are tachykinin antagonists.

3-Azetidinylalkylpiperidines or -pyrrolidines as tachykinin antagonists

A compound of the formula: ##STR1## or a pharmaceutically acceptable salt thereof, wherein X, O R, R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are defined in the specification; compositions containing such compounds; intermediates used in the preparation of such compounds; and methods for treating a disease associated with the altered tone and/or motility of smooth muscle, for example chronic obstructive airways disease, asthma, urinary incontinence, irritable bowel syndrome, diverticular disease, oesophageal achalasia, and hypertension.

Benzopyrans

5-azabicyclo(3.1.0)hexylalkyl-2-piperiodones and --glutarimides as

The present invention provides compounds of the formula (I): ##STR1## and the pharmaceutically acceptable salts thereof, wherein R is C.sub.3 -C.sub.7 cycloalkyl, aryl or C.sub.1 -C.sub.6 alkyl, said C.sub.1 -C.sub.6 alkyl being optionally substituted by fluoro, --COOH, --COO(C.sub.1 -C.sub.4) alkyl, C.sub.3 -C.sub.7 cycloalkyl, adamantyl, aryl or het.sup.1, and said C.sub.3 -C.sub.7 cycloalkyl being optionally substituted by 1 or 2 substituents each independently selected from C.sub.1 -C.sub.4 alkyl, C.sub.3 -C.sub.7 cycloalkyl, C.sub.1 -C.sub.4 alkoxy, hydroxy, fluoro, fluoro(C.sub.1 -C.sub.4) alkyl and fluoro(C.sub.1 -C.sub.4)alkoxy;

Azetidines

Oxa-and thia-diazole muscarinic receptor antagonists

(Azetidin-1-ylalkyl) lactams as tachykinin antagonists

A compound of the formula: or a pharmaceutically acceptable salt thereof, wherein Y is a direct link, --(CH.sub.2 --, --(CH.sub.2).sub.2 --, --CH.sub.2 O-- or CH.sub.2 S--; R is --CN or --CONH.sub.2 ; and R.sup.1 is a group of the formula: ##STR1## where R.sup.2 and R.sup.3 are each independently H, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, --(CH.sub.2).sub.n OH, halo, trifluoromethyl, cyano, --(CH.sub.2).sub.n NR.sup.4 R.sup.5, --CO(C.sub.1 -C.sub.4 alkyl), --OCO(C.sub.1 -C.sub.4 alkyl), --CH(OH) (C.sub.1 -C.sub.4 alkyl), --C(OH) (C.sub.1 -C.sub.4 alkyl).sub.2, --SO.sub.2 NH.sub.2, --(CH.sub.2).sub.n CONR.sup.4 R.sup.5 or --(CH.sub.2).sub.n COO(C.sub.1 -C.sub.4 alkyl; R.sub.4 and R.sup.5 are each independently H or C.sub.1 -C.sub.4 alkyl; n is 0, 1 or 2; and 'Het' is pyridyl, pyrazinyl or thienyl. The compounds are muscarinic receptor antagonists usedful in the treatment of diseases associated with the altered motility and/or tone of smooth muscle, especially irritable bowel syndrome.

Muscarinic receptor antagonists

Compounds of the formula: ##STR1## wherein: X is O, NH or NR.sup.1 ; R.sup.1 is C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.7 cycloalkyl, C.sub.3 -C.sub.7 cycloalkyl(C.sub.1 -C.sub.4)alkyl, aryl or aryl (C.sub.1 -C.sub.4)alkyl; wherein the C.sub.1 -C.sub.6 alkyl group is optionally substituted by fluorine and the C.sub.3 -C.sub.7 cycloalkyl or C.sub.3 -C.sub.7 cycloalkyl(C.sub.1 -C.sub.4 )alkyl group is optionally substituted in the cycloalkyl ring by up to two substituents each independently selected from halo, C.sub.1 -C.sub.4 alkoxy or halo(C.sub.1 -C.sub.4)alkoxy; R.sup.2 is phenyl optionally substituted with one or two halo substituents, indolyl or thienyl; R.sup.3 is NH.sub.2, --NR.sup.4 SO.sub.2 (C.sub.1 -C.sub.6 alkyl), --NR.sup.4 SO.sub.2 aryl, --NR.sup.4 CO(C.sub.1 -C.sub.6 alkyl), --NR.sup.4 CO aryl or a 5 to 7-membered N-linked cyclic group incorporating W in the ring wherein W is O, NR.sup.5, CH(OH), CHCO.sub.2 H, CHN(R.sup.4).sub.2, CHF, CF.sub.2, C.dbd.O or CH.sub.2 ; R.sup.4 is H or C.sub.1 -C.sub.6 alkyl; R.sup.5 is H, C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.7 cycloalkyl, C.sub.3 -C.sub.7 cycloalkyl(C.sub.1 -C.sub.6)alkyl, C.sub.2 -C.sub.6 alkanoyl, C.sub.4 -C.sub.8 cycloalkanoyl, C.sub.3 -C.sub.7 cycloalkyl(C.sub.2 -C.sub.6)alkanoyl, aryl CO--, C.sub.1 -C.sub.6 alkyl SO.sub.2 --, C.sub.3 -C.sub.7 cycloalkyl SO.sub.2 --, C.sub.3 -C.sub.7 cycloalkyl(C.sub.1 -C.sub.6)alkyl SO.sub.2 --, aryl-SO.sub.2 -- or (R.sup.6).sub.2 NSO.sub.2 --, wherein each R.sup.6 is independently H or C.sub.1 -C.sub.4 alkyl or the two groups may be joined to form with the nitrogen atom to which they are attached, a pyrrolidinyl, piperidino, morphlino or piperazinyl group; m is 0, 1 or 2 with the proviso that m is not 0 when W is NR.sup.5, C.dbd.O, or O; and n is an integer of from 1 to 4; are neurokinin receptor antagonists of utility in the treatment of a variety of medical conditions including urinary incontinence, asthma and related conditions.

3-aza and 3-oxa piperidone tachykinin antagonists

Benzopyranes as potassium channel openers

The invetion is a method of treating irritable bowel syndrome with a compound selected from the formula ##STR1## wherein R, R.sup.1, m, n p are as defined in the specification, or a pharmaceutically acceptable salt thereof.

Growing community of inventors

Sandwich, United Kingdom

Alexander Roderick MacKenzie