Abstract: The present invention provides engineered phosphopentomutase (PPM) enzymes, polypeptides having PPM activity, and polynucleotides encoding these enzymes, as well as vectors and host cells comprising these polynucleotides and polypeptides. Methods for producing PPM enzymes are also provided. The present invention further provides compositions comprising the PPM enzymes and methods of using the engineered PPM enzymes. The present invention finds particular use in the production of pharmaceutical compounds.

Abstract: The present invention provides engineered phosphopentomutase (PPM) enzymes, polypeptides having PPM activity, and polynucleotides encoding these enzymes, as well as vectors and host cells comprising these polynucleotides and polypeptides. Methods for producing PPM enzymes are also provided. The present invention further provides compositions comprising the PPM enzymes and methods of using the engineered PPM enzymes. The present invention finds particular use in the production of pharmaceutical compounds.

Abstract: The present disclosure provides enzymes derived from the fungi Fusarium oxysporum c8D (“FoPip4H enzymes”) having improved properties as compared to a naturally occurring wild-type enzyme including the capability of hydroxylating certain substituted indanones to provide optically pure 3-hydroxyindanones. Also provided are polynucleotides encoding the FoPip4H enzymes, host cells capable of expressing the FoPip4H enzymes, and processes for using the FoPip4H enzymes to synthesize (R)-4-fluoro-3-hydroxy-7-(methylsulfonyl)-2, 3-dihydro-1H-inden-1-one, a useful intermediate in the synthesis of belzutifan.

Abstract: The present disclosure provides transaminase enzymes having improved properties and are capable of reducing (1S,5R)-6,8-dioxabicyclo[3.2.1]octan-4-one with high selectivity. Also provided are polynucleotides encoding the transaminase enzymes, host cells capable of expressing the transaminase enzymes, and methods of using the transaminase enzymes to synthesize (1S,4R,5R)-6,8-dioxabicyclo[3.2.1]octan-4-amine.

Abstract: The present invention relates to efficient processes useful in the preparation of fluorinated cyclic dinucleosides, such as [P(R)]-2?-deoxy-2?-fluoro-5?-O—[(R)-hydroxymercaptophosphinyl]-P-thio-?-D-arabino-adenylyl-(3??5?)-3?-deoxy-3?-fluoroguanosine cyclic nucleotide, which is also known as (2R,5R,7R,8S,10R,12aR,14R,15S,15aR,16R)-7-(2-amino-6-oxo-1,6-dihydro-9H-purin-9-yl)-14-(6-amino-9H-purin-9-yl)-15,16-difluoro-2, 10-bis(sulfanyl)octahydro-2H,10H, 12H-2?5,10?5-5,8-methanofuro[3,2-1][1, 3,6,9,11,2,10]pentaoxadiphosphacyclotetradecine-2,10-dione. The present invention also encompasses intermediates useful in the disclosed synthetic processes and the methods of their preparation.

Abstract: The present invention relates to efficient synthetic processes useful in the preparation of uridine, which is useful in the production of nucleosides and nucleotides that may be active as antiviral agents, as well as compositions and methods thereof.

Abstract: The present invention relates to efficient synthetic processes useful in the preparation of antiviral nucleosides, particularly uridine 4-oxime 5?-(2-methylpropanoate) {(2R,3S,4R,5R)-3,4-dihydroxy-5-[4-(hydroxyimino)-2-oxo-3,4-dihydropyrimidin-1(2H)-yl]oxolan-2-yl}methyl 2-methylpropanoate and pharmaceutically acceptable salts, derivatives, tautomers, isomers, and prodrugs of, which may be active as antiviral agents, as well as compositions and methods thereof. The present invention also encompasses intermediates useful in the disclosed synthetic processes and the methods of their preparation.

Abstract: The present disclosure provides MTR kinase polypeptides having improved properties as compared to a naturally occurring wild-type MTR kinase polypeptide including the capability of phosphorylating D-ribose and 5?-D-isobutyrylribose to give alpha-D-ribose-1-phosphate and alpha 5?-D-isobutyrylribose-1-phosphate. Also provided are polynucleotides encoding the MTR kinase polypeptides, host cells capable of expressing the MTR kinase polypeptides, and methods of using the MTR kinase polypeptides to synthesize alpha-D-ribose-1-phosphate and alpha 5?-D-isobutyrylribose-1-phosphate.

Abstract: The present invention provides engineered phosphopentomutase (PPM) enzymes, polypeptides having PPM activity, and polynucleotides encoding these enzymes, as well as vectors and host cells comprising these polynucleotides and polypeptides. Methods for producing PPM enzymes are also provided. The present invention further provides compositions comprising the PPM enzymes and methods of using the engineered PPM enzymes. The present invention finds particular use in the production of pharmaceutical compounds.

Abstract: The present invention provides engineered phosphopentomutase (PPM) enzymes, polypeptides having PPM activity, and polynucleotides encoding these enzymes, as well as vectors and host cells comprising these polynucleotides and polypeptides. Methods for producing PPM enzymes are also provided. The present invention further provides compositions comprising the PPM enzymes and methods of using the engineered PPM enzymes. The present invention finds particular use in the production of pharmaceutical compounds.

Abstract: The present invention provides engineered phosphopentomutase (PPM) enzymes, polypeptides having PPM activity, and polynucleotides encoding these enzymes, as well as vectors and host cells comprising these polynucleotides and polypeptides. Methods for producing PPM enzymes are also provided. The present invention further provides compositions comprising the PPM enzymes and methods of using the engineered PPM enzymes. The present invention finds particular use in the production of pharmaceutical compounds.