Abstract: The present invention provides industrially suitable processes for preparing intermediates in the production of substituted polycyclic pyridone derivatives having a cap-dependent endonuclease inhibitory activity.

Abstract: The present invention provides industrially suitable processes for preparing intermediates in the production of substituted polycyclic pyridone derivatives having a cap-dependent endonuclease inhibitory activity. In the process as shown below, wherein each symbol is as defined in the specification, an optically active substituted tricyclic pyridone derivative of the formula (VII) is obtained in high yield and high enantioselectivity by subjecting a compound of the formula (III) or (VI) to intramolecular cyclization with controlling stereochemistry to obtain a compound of the formula (IV) having a removable functional group on an asymmetric carbon, and then removing the functional group thereof.

Abstract: The invention is directed to a method for treatment of viral infections, particularly HIV infection. The method involves administering compounds which are substituted (3S,11aR)-N-[(2,4-difluorophenyl)methyl]-6-oxy-3-methyl-5,7-dioxo-2,3,5,7,11,11a-hexahydro[1,3]oxazolo[3,2-a]pyrido[1,2-d]pyrazine-8-carboxamides of formula (I).

Abstract: The present invention features compounds that are prodrugs of HIV integrase inhibitors and therefore are useful in the delivery of compounds for the inhibition of HIV replication, the prevention and/or treatment of infection by HIV, and in the treatment of AIDS and/or ARC.

Abstract: The compounds are intermediates in the preparation of therapeutic agents useful in the treatment of viral infections, particularly HIV infection. The compounds are (3S,11aR)-6-[(phenylmethyl)oxy]-3-methyl-2,3,11,11a-tetrahydrooxazolo[3,2-a]pyrido[1,2-d]pyrazine-5,7-dione of the formula P-9 and/or (3S,11aR)-6-[(phenylmethyl)oxy]-8-bromo-3-methyl-2,3,11,11a-tetrahydrooxazolo[3,2-a]pyrido[1,2-d]pyrazine-5,7-dione of the formula P-10.

Abstract: The present invention features compounds that are prodrugs of HIV integrase inhibitors and therefore are useful in the delivery of compounds for the inhibition of HIV replication, the prevention and/or treatment of infection by HIV, and in the treatment of AIDS and/or ARC.

Abstract: The compounds are therapeutic agents useful in the treatment of viral infections, particularly HIV infection. The compounds are substituted (3S, 11aR)-N-[(2,4 -difluorophenyl)methyl]-6-oxy-3-methyl-5,7-dioxo-2,3,5,7,11,11a-hexahydro[1,3]oxazolo[3,2-a]pyrido[1,2-d]pyrazine-8-carboxamides of formula (I).

Abstract: The compounds are intermediates in the preparation of therapeutic agents useful in the treatment of viral infections, particularly HIV infection. The compounds are 2-(2-hydroxy-2-phenylethyl)-3-[(phenylmethyl)oxy]-4H-pyran-4-one of the formula P-3 and/or 2-[(E)-2-phenylethenyl]-3-[(phenylmethyl)oxy]-4H-pyran-4-one of the formula P-4.

Abstract: The present invention features a process for the preparation of 4-oxo-3-[(phenylmethyl)oxy]-4-H-pyran-2-carboxylic acid, an intermediate useful in the synthesis of HIV integrase inhibitors. The process involves (a) treating a compound of formula P-2 with lithium bis(trimethylsilyl)amide and benzaldehyde to form a compound of formula P-3, (b) treating the compound of formula P-3 with triethylamine and methanesulfonyl chloride followed by N-methyl-2-pyrrolidone and 1,8-diazabicyclo[5.4.0]undec-7-ene to form a compound of formula P-4, and (c) treating the compound of formula P-4 with RuCl3 and NaIO4 to form the compound of formula P-5.

Abstract: The present invention features compounds that are prodrugs of HIV integrase inhibitors and therefore are useful in the delivery of compounds for the inhibition of HIV replication, the prevention and/or treatment of infection by HIV, and in the treatment of AIDS and/or ARC.

Abstract: The present invention features compounds that are prodrugs of HIV integrase inhibitors and therefore are useful in the delivery of compounds for the inhibition of HIV replication, the prevention and/or treatment of infection by HIV, and in the treatment of AIDS and/or ARC.

Abstract: The compounds are intermediates in the preparation of therapeutic agents useful in the treatment of viral infections, particularly HIV infection. The compounds are 1-(2,3-dihydroxypropyl)-4-oxo-3-[(phenylmethyl)oxy]-1,4-dihydro-2-pyridinecarboxylic acid of the formula P-6 and/or methyl 1-(2,3-dihydroxypropyl)-4-oxo-3-[(phenylmethyl)oxy]-1,4-dihydro-2-pyridinecarboxylate of the formula P-7.

Abstract: Processes are provided which create an aldehyde methylene, or hydrated or hemiacetal methylene attached to a heteroatom of a 6 membered ring without going through an olefinic group and without the necessity of using an osmium reagent. In particular, a compound of formula (I) can be produced from (II) and avoid the use of an allyl amine: (formulae I and II) where R, P1 P3, R3 and Rx are as described herein.

Abstract: The present invention features compounds that are prodrugs of HIV integrase inhibitors and therefore are useful in the delivery of compounds for the inhibition of HIV replication, the prevention and/or treatment of infection by HIV, and in the treatment of AIDS and/or ARC.

Abstract: The present invention features compounds that are prodrugs of HIV integrase inhibitors and therefore are useful in the delivery of compounds for the inhibition of HIV replication, the prevention and/or treatment of infection by HIV, and in the treatment of AIDS and/or ARC.

Abstract: Processes are provided which create an aldehyde methylene, or hydrated or hemiacetal methylene attached to a heteroatom of a 6 membered ring without going through an olefinic group and without the necessity of using an osmium reagent. In particular, a compound of formula (I) can be produced from (II) and avoid the use of an allyl amine: (formulae I and II) where R, P1 P3, R3 and Rx are as described herein.

Abstract: The present invention features compounds that are prodrugs of HIV integrase inhibitors and therefore are useful in the delivery of compounds for the inhibition of HIV replication, the prevention and/or treatment of infection by HIV, and in the treatment of AIDS and/or ARC. For example, the present invention includes methyl 3-(benzyloxy)-1-(2,2-dihydroxyethyl)-4-oxo-1,4-dihydropyridine-2 -carboxylate of the formula P-8: and processes for the preparation thereof.

Abstract: Processes are provided which create an aldehyde methylene, or hydrated or hemiacetal methylene attached to a heteroatom of a 6 membered ring without going through an olefinic group and without the necessity of using an osmium reagent. In particular, a compound of formula (I) can be produced from (II) and avoid the use of an allyl amine: (formulae I and II) where R, P1 P3, R3 and Rx are as described herein.

Abstract: The present invention features compounds that are prodrugs of HIIV integrase inhibitors and therefore are useful in the inhibition of HIV replication, the prevention and/or treatment of infection by HIV, and in the treatment of AIDS and/or ARC.

Abstract: Processes are provided which create an aldehyde methylene, or hydrated or hemiacetal methylene attached to a heteroatom of a 6 membered ring without going through an olefinic group and without the necessity of using an osmium reagent. In particular, a compound of formula (I) can be produced from (II) and avoid the use of an allyl amine: (formulae I and II) where R, P1P3, R3 and Rx are as described herein.