Organic compounds -- part of the class 532-570 series – Organic compounds – Unsubstituted hydrocarbyl chain between the ring and the -c-...
Patent
1989-11-02
1990-12-18
Hollrah, Glennon H.
Organic compounds -- part of the class 532-570 series
Organic compounds
Unsubstituted hydrocarbyl chain between the ring and the -c-...
540571, 540572, C07D48708
Patent
active
049787535
ABSTRACT:
A 7-phenylpyrimido[1,2-a][1,4]benzodiazepin-3(5H)-ones of the formula II: ##STR1## wherein R.sub.o is selected from the group consisting of hydrogen, alkyl of 1 to 3 carbon atoms, inclusive, --COOR in which R is alkyl defined as above, ##STR2## in which n is a number of 1 to 4, R.sub.6 and R.sub.7 are hydrogen or alkyl defined as above or together ##STR3## is selected from the group consisting of pyrrolidino, piperidino, morpholino, and 4-methylpiperazino, and --CH.sub.2 OH; wherein R.sub.1 is selected from the group consisting of hydrogen, hydroxy, acetoxy, propionoxy, succinyloxy, and alkyl esters thereof; wherein R.sub.2, R.sub.3, R.sub.4, and R.sub.5 are selected from the group consisting of hydrogen, halogen, nitro, cyano, trifluoromethyl, lower-alkyl, -alkoxy, -alkylthio, -alkylsulfinyl, -alkylsulfonyl, -alkanoylamino and -dialkylamino, are synthesized by condensing a 2-amino-5-phenyl-3H-1,4-benzodiazepine of the formula I ##STR4## with a compound selected from the group consisting of acetylenic compounds of the formulae HC.tbd.C--COOR, ROOC.tbd.C--COOR in which R is alkyl defined above, inclusive, and ##STR5## in which R' is alkyl defined as above or ##STR6## defined as above, to give a compound of formula IIa ##STR7## wherein R.sub.2, R.sub.3, R.sub.4, and R.sub.5 is defined as above, and Ro' is selected from the group consisting of hydrogen, alkyl as defined above, --COOR as defined above, and ##STR8## as defined above. Compounds of formula II wherein R.sub.o is --CH.sub.2 OH are obtained by reducing a compound IIa wherein R.sub.o is --CH.sub.2 OH are obtained by reducing a compound IIa wherein R.sub.o ' is --COOR.
The compounds of formula II and their pharmacologically acceptable acid addition salts and N-oxides are useful tranquilizers and sedatives for birds and mammals.
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Hollrah Glennon H.
The Upjohn Company
Turnipseed James H.
Williams, Jr. Sidney B.
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