Abstract: This invention provides a process for preparing a compound of formula III ##STR1## wherein R.sup.1 is bromo, iodo or COOR.sup.2 ;R.sup.2 is H, C.sub.1 -C.sub.4 alkyl, phenyl which may be substituted or benzyl; andA is a 5- or 6-membered aromatic residue which may contain up to three hetero atoms and which may optionally be substituted with one or two groups selected from the group consisting of halo, hydroxy, C.sub.1 -C.sub.4 alkyl, and C.sub.1 -C.sub.4 alkoxy; or a salt thereof, which comprises(a) reacting a compound of formula I ##STR2## wherein R is C.sub.1 -C.sub.4 alkyl or phenyl which may be substituted; andR.sup.1, R.sup.2, and A are as defined above;or a salt thereof, with a sulfurization agent;(b) cyclizing the reaction product from step (a) with guanidine; and(c) optionally salifying the reaction product from step (b).

Abstract: Processes for preparing 5-substituted pyrrolo?2,3-d!pyrimidines which are useful as intermediates for the preparation of pyrrolo?2,3-d!pyrimidine antineoplastic agents or as antineoplastic agents themselves are provided.

Abstract: Processes for preparing 5-substituted pyrrolo[2,3-d]pyrimidines which are useful as intermediates for the preparation of pyrrolo[2,3-d]pyrimidine antineoplastic agents or as antineoplastic agents themselves are provided.

Abstract: Processes for preparing 5-substituted pyrrolo[2,3-d]pyrimidines which are useful as intermediates for the preparation of pyrrolo[2,3-d]pyrimidine antineoplastic agents or as antineoplastic agents themselves are provided.

Abstract: A process and intermediates for the enantioselective synthesis of 5,10-dideaza-5,6,7,8-tetrahydrofolic acid are disclosed.

Abstract: Processes for preparing 5-substituted pyrrolo[2,3-d]pyrimidines which are useful as intermediates for the preparation of pyrrolo[2,3-d]pyrimidine antineoplastic agents or as antineoplastic agents themselves are provided.

Abstract: A process and intermediates for the enantioselective synthesis of 5,10-dideaza-5,6,7,8-tetrahydrofolic acid are disclosed.

Abstract: This invention relates to intermediates, and processes thereto, for the preparation of tetrahydropyrido[2,3-d]pyrimidines which are useful for the treatment of susceptable neoplasms. The intermediates have the following formula II; ##STR1## wherein the R, R.sup.1 and A groups are as defined in the specification.

Abstract: Processes for preparing 4-hydroxy-5-ethynylpyrrolo[2,3-d]pyrimidine intermediates and N-[4-(2-{4-hydroxypyrrolo[2,3-d]pyrimidin-3-yl}ethyl)benzoyl]-L-glutamic acid derivatives having antineoplastic activity are provided.

Abstract: Processes for preparing 5-substituted pyrrolo[2,3-d]pyrimidines which are useful as intermediates for the preparation of pyrrolo[2,3-d]pyrimidine antineoplastic agents or as antineoplastic agents themselves are provided.

Abstract: This invention relates to intermediates and processes thereto, for the preparation of 5,6-dihydropyrro[2,3-d]pyrimidines which are useful for the treatment of susceptible neoplasms.

Abstract: This invention provides the substantially pure (R) enantiomer of a compound of the Formula II: ##STR1## The compounds of Formula II are useful in the preparation of the substantially pure (R) enantiomer of angiotensin II antagonists of Formula III: ##STR2## wherein R.sub.1, Ar, R.sub.2 and X are variables.

Abstract: This invention provides the substantially pure (R) enantiomer of a compound of the Formula II: ##STR1## The compounds of Formula II are useful in the preparation of the substantially pure (R) enantiomer of angiotensin II antagonists of Formula III: ##STR2## wherein R.sub.1, Ar, R.sub.2 and X are variables.

Abstract: This invention relates to intermediates and processes thereto, for the preparation of 5,6-dihydropyrro[2,3-d] pyrimidines which are useful for the treatment of susceptible neoplasms.

Abstract: The present invention provides a process for preparing a 4-hydroxypyrrolo[2,3-d]pyrimidine derivative of the formula ##STR1## wherein R is NHC*H(COOR.sup.1)CH.sub.2 CH.sub.2 COOR.sup.1 or OR.sup.1 ;R.sup.1 is H or a carboxyl protecting group;the configuration about the carbon atom designated * is L;n is 0 or 1; andA is an aryl group optionally having, in addition to the COR substituent, one or two substituents selected from the group consisting of halo, hydroxy, C.sub.1 -C.sub.4 alkyl and C.sub.1 -C.sub.4 alkoxy; or a salt thereof, which comprises(a) halogenating a compound of the formula ##STR2## wherein R, R.sup.1, A and * are as defined above;j is 0 or 1; and(b) reacting 2,4-diamino-6-hydroxypyrimidine, or a salt thereof, with the reaction product from step (a), in the presence of a polar solvent.

Abstract: This invention relates to intermediates and processes thereto, for the preparation of 5,6-dihydropyrro[2,3-d]pyrimidines which are useful for the treatment of susceptible neoplasms

Abstract: 4-Hydroxypyrrolo[2,3-d]pyrimidines are regiospecifically halogenated at the C-5 position by silylation in the presence of an inert organic solvent and iodination, bromination or chlorination.

Abstract: A process and intermediates for the enantioselective synthesis of 5,10-dideaza-5,6,7,8-tetrahydrofolic acid are disclosed.

Abstract: 7-Substituted bicyclic pyrazolidinone compounds as antimicrobials and the corresponding intermediates, are discussed or provided. The use of the antimicrobial compounds in pharmaceutical compositions and in methods for treating bacterial infections is set forth.

Abstract: A process and intermediates for the enantioselective synthesis of 5,10-dideaza-5,6,7,8-tetrahydrofolic acid are disclosed.