Abstract: The present invention provides compounds of Formula I useful as BACE inhibitors in the treatment of e.g. Alzheimer's disease: wherein A is selected from the group consisting of; of; R1 is H or F; R2 is H, —OCH3, C1-C3 alkyl; R3 is H, —CH3, or —OCH3; and R4 is H or F; or a pharmaceutically acceptable salt thereof.

Abstract: The present invention provides compounds of Formula I useful as BACE inhibitors in the treatment of e.g. Alzheimer's disease: wherein A is selected from the group consisting of; of; R1 is H or F; R2 is H, —OCH3, C1-C3 alkyl; R3 is H, —CH3, or —OCH3; and R4 is H or F; or a pharmaceutically acceptable salt thereof.

Abstract: Pharmaceutical compounds of the formula: ##STR1## in which n is 1 to 6, m is 1 or 2 and p is 1 or 2, R.sup.1 and R.sup.2 are each hydrogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, HO--C.sub.1-4 alkyl, C.sub.1-4 alkoxy-C.sub.1-4 alkyl, C.sub.1-4 alkylthio, halo, optionally substituted phenyl, optionally substituted phenyl-C.sub.1-4 alkyl, or R.sup.1 and R.sup.2 together with the carbon atom to which they are attached form a C.sub.3-6 cycloalkyl group, >C.dbd.O, C.dbd.NOR' where R' is hydrogen or C.sub.1-4 alkyl,R.sup.3, R.sup.4 and R.sup.5 are each hydrogen, halo, nitro, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, C.sub.1-4 alkyl-CO--, where m is 0, 1 or 2, R'R"N--SO.sub.2 --, --COOR', --CONR'R", --NR'R", --N(OR')COOR", --COR', --NHSO.sub.2 R', where R' and R' are each hydrogen or C.sub.1-4 alkyl,R.sup.6 and R.sup.7 are each hydrogen or C.sub.1-4 alkyl,X is oxygen or sulphur,the dotted line represents an optional double bond, and the fluorine atom is attached at the 6- or 7-position; and salts thereof.

Abstract: A pharmaceutical compound of the formula ##STR1## in which X is --CR'R"-- or --C(O)-- where R' and R" are each hydrogen, C.sub.1-6 alkyl or optionally substituted phenyl, Y is oxygen or sulphur, R.sup.1, R.sup.2 and R.sup.7 are each selected from halo, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, trifluoromethyl, nitro, cyano, amino, phenyl, phenoxy, benzyl, benzyloxy, acylamino, C.sub.1-4 alkylsulphonylamino, C.sub.1-4 alkylthio, C.sub.1-4 alkylsulphonyl, carboxamido, sulphonamido, hydroxy, methylenedioxy, carboxy, and heteroaryl, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are each hydrogen, C.sub.1-6 alkyl or optionally substituted phenyl, n, m and p are each 0, 1, 2 or 3;or a salt or ester thereof.

Abstract: A pharmaceutical compound of the formula ##STR1## in which R is hydrogen, halo or F.sub.2 HCO--;or a salt, amide or ester thereof.

Abstract: A pharmaceutical compound of the formula ##STR1## and salts and esters thereof.

Abstract: A pharmaceutical compound of the formula ##STR1## in which R is hydrogen, halo or F.sub.2 HCO--; or a salt, amide or ester thereof, useful in the treatment of skeletal diseases.

Abstract: Pharmaceutical compounds of the formula ##STR1## in which n is 0, 1 or 2 and R.sup.1 is attached at any of the positions 7, 8, 9 or 10, and each R.sup.1 is halo, carboxy, trifluoromethyl, hydroxy, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, C.sub.1-4 alkylthio, hydroxy-C.sub.1-4 alkyl, hydroxy-C.sub.1-4 alkoxy, nitrogen-containing heterocyclyl, nitro, trifluoromethoxy, --COOR.sup.5 where R.sup.5 is an ester group, --COR.sup.6, --CONR.sup.6 R.sup.7 or --NR.sup.6 R.sup.7 where R.sup.6 and R.sup.7 are each hydrogen or C.sub.1-4 alkyl;R.sup.2 is phenyl, naphthyl or heteroaryl selected from thienyl, pyridyl, benzothienyl, quinolinyl, benzofuranyl or benzimidazolyl, said phenyl, naphthyl and heteroaryl groups being optionally substituted, or R.sup.2 is furanyl optionally substituted with C.sub.1-4 alkyl;R.sup.3 is nitrile, carboxy, --COOR.sup.8 where R.sup.8 is an ester group, or --CONR.sup.9 R.sup.10 where R.sup.9 and R.sup.10 are each hydrogen or C.sub.1-4 alkyl; andR.sup.4 is --NR.sup.11 R.sup.12, --NR.sup.11 COR.sup.