Abstract: Apparatuses, systems, and techniques to modify tensors based on processor requirements. In at least one embodiment, input tensors and weight tensors are modified to meet processing resource requirements.

Abstract: The present invention relates to PDE9 inhibitors, their synthesis, and their use for treatment of benign prostate hyper-plasia, beta thalassemia, and sickle cell disease.

Abstract: The present invention relates a process for the synthesis of 6-((3S,4S)-4-methyl-1-(pyrimidin-2 ylmethyl)pyrrolidin-3-yl)-3-tetrahydropyran-4-yl-7H-imidazo[1,5-a]pyrazin-8-one, comprising use of the chiral acid (+)-O,O-Dibenzoyl-D-tartaic acid.

Abstract: The present invention relates to PDE9 inhibitors, their synthesis, and their use for treatment of benign prostate hyperplasia, beta thalassemia, and sickle cell disease.

Abstract: A process for preparing an enantiomerically enriched cycloalkene-substituted alanine compound having the structure: by asymmetrically hydrogenating a dehydro amino acid compound having the structure: in a suitable reaction media in the presence of a catalyst having a transition metal moiety complexed to a chiral phosphine ligand to prepare enantiomerically enriched cycloalkene substituted alanine compounds having the structure of Formula (IA) or (IB), which are key intermediates for the ACE inhibitors ramipril and perindolpril:

Abstract: A process for producing an enantiomerically enriched compound of Formula I: where the R-configuration, or S-configuration at the stereogenic center is marked with an *; by hydrogenating an enamide of formula III: in an organic solvent in the presence of a catalyst comprising a transition metal selected from rhodium or iridium, complexed to a chiral diphosphine ligand; Ar is optionally substituted phenyl; Z is OR1, SR1 or NR1R2; and P is R3, OR3 or NR3R4; R1 and R2 are selected from H, C1-8 alkyl, C5-12 cycloalkyl, aryl and aryl-C1-2-alkyl; or R1 and R2 together with the nitrogen atom form a C4-7-membered heterocyclic ring optionally fused with a 5- to 6-membered carbocyclic or heterocyclic ring; and R3 and R4 are selected from H, C1-8 alkyl, aryl, C5-12 cycloalkyl and aryl-C1-2-alkyl; or R3 and R4 together with the nitrogen atom form a C4-7-membered heterocyclic ring.

Abstract: A process for preparing an enantiomerically enriched cycloalkene-substituted alanine compound having the structure: by asymmetrically hydrogenating a dehydro amino acid compound having the structure: in a suitable reaction media in the presence of a catalyst having a transition metal moiety complexed to a chiral phosphine ligand to prepare enantiomerically enriched cycloalkene substituted alanine compounds having the structure of Formula (IA) or (IB), which are key intermediates for the ACE inhibitors ramipril and perindolpril:

Abstract: A process for producing an enantiomerically enriched, pure or enriched and essentially pure compound of Formula I: wherein the R-, or S-configuration at the stereogenic center is marked with an *; which process hydrogenates an enamide compound of formula III: in an organic solvent in the presence of a transition metal precursor complexed to a chiral phosphine ligand catalyst; wherein Ar is phenyl which is unsubstituted or substituted; Z is OR1, SR1 and NR1R2; and P is R3, OR3, and NR3R4; R1 and R2 are selected from H, C1-8 alkyl, C5-12 cycloalkyl, aryl and aryl-C1-2-alkyl; or R1 and R2 together with the nitrogen atom to which they are attached form a C4-7-member heterocyclic ring system optionally fused with a 5- to 6-member carbocyclic or heterocyclic ring system; and R3 and R4 are selected from H, C1-8 alkyl, aryl, C5-12 cycloalkyl and aryl-C1-2-alkyl; or R3 and R4 together with the nitrogen atom to which they are attached form a C4-7-member heterocyclic ring system.

Abstract: An enantioselective process for preparing zolmitriptan, (S)-4-{[3-[2-(dimethylamine)ethyl]-1H-indol-5-yl]methyl}-2-oxazolidinone), by asymmetric hydrogenation of (Z)-2-(acetylamino)-3-{[3-N,N-(dimethylamine)ethyl)-1H-indol-5-yl]-2-propenoic acid methyl ester in the presence of hydrogen and an enantioselective chiral phosphine transition metal catalyst.

Abstract: A process for preparing an enantiomerically enriched amino alcohol or derivatives thereof having the structure: wherein C* is a chiral carbon atom and R1 and R2 are independently selected from hydrogen, alkyl, alkoxy, aryl and a peptide chain, wherein said process includes the steps of: (a) providing an amino acid having the structure of Formula I: (b) protecting the amino group of the Formula I amino acid with a carbobenzoxy(Cbz) N-protecting group by reacting the amino acid with benzyl chloroformate in the presence of a base; (c) forming a carboxylic acid alkyl ester of the Cbz N-protected Formula I amino acid by reacting the amino acid with a C1-12 alcohol; and (d) reducing the Cbz N-protected amino acid ester with a borohydride reducing agent in an organic solvent or mixture of organic solvents to form a Cbz N-protected amino-alcohol

Abstract: Provided is a dynamic resolution method of enriching a desired isomer of an alpha-substituted carboxylic acid relative to an undesired isomer, the method comprising: (a) in a solvent, contacting the alpha-substituted carboxylic acid, wherein the alpha substitution is with a leaving group and wherein the alpha carbon is chiral, with a homochiral amine to form a salt that is partially insoluble under selected reaction conditions, wherein the homochiral amine is selected so that the solubility of the amine salt of the undesired alpha-substituted carboxylic acid is greater than that of the amine salt of the desired alpha-substituted carboxylic acid under the selected reaction conditions; (b) reacting under the selected reaction conditions the salt with a nucleophile, wherein the reacting is effective in producing a net increase in the less soluble amine salt of the alpha-substituted carboxylic acid, and wherein the selected conditions are selected to (i) promote nucleophilic substitution of the nucleophile and th

Abstract: A method for preparing irbesartan and intermediates thereof.

Abstract: A method for preparing irbesartan and intermediates thereof.

Abstract: A method for preparing irbesartan and intermediates thereof.

Abstract: Provided is a method of resolving a racemic mixture of a compound of formula I to obtain a desired enantiomer: wherein Ar is C6 or C10 aromatic group that can be substituted with H, C1 to C6 alkyl, trifluoromethyl or halo, R5 is halo or —S—R1, wherein R1 is H or acetyl, and R2 is H or C1 to C6 alkyl, the method comprising: reacting a compound of formula I wherein the compound is an ester whereby R2 is C1 to C6 alkyl with a lipase derived from Mucor meihei to stereoselectively hydrolyze the ester bond to produce an acid; and isolating the acid, wherein the reaction is conducted in a solvent comprising 80% to 98% v/v % organic phase and a residue of water phase (which can be buffered).

Abstract: Provided is a method of resolving a racemic mixture of a compound of formula I to obtain a desired enantiomer: wherein Ar is C6 or C10 aromatic group that can be substituted with H, C1 to C6 alkyl, trifluoromethyl or halo, R5 is halo or —S—R1, wherein R1 is H or acetyl, and R2 is H or C1 to C6 alkyl, the method comprising: reacting a compound of formula I wherein the compound is an ester whereby R2 is C1 to C6 alkyl with a lipase derived from Mucor meihei to stereoselectively hydrolyze the ester bond to produce an acid; and isolating the acid, wherein the reaction is conducted in a solvent comprising 80% to 98% v/v % organic phase and a residue of water phase (which can be buffered).

Abstract: Provided are processes and synthetic intermediates useful for the preparation of ?-difluoromethylornithine (DFMO) having the formula

Abstract: A method for preparing irbesartan and intermediates thereof.

Abstract: A process is provided for preparing the intermediate A in accordance with the following reaction sequence The intermediate A is used in preparing DPP IV inhibitors which are useful in treating diabetes.

Abstract: Provided are processes and synthetic intermediates useful for the preparation of &agr;-difluoromethylornithine (DFMO) having the formula 1