3-Hydroxy-5- pentanoic

Levulinic acid. Hydrogenation of levulinic acid resulting in the reduction of the ketone moiety leads to 4-hydroxy pentanoic acid. This acid can cyclize to form y-valerolactone (GVL) which is a useful industrial solvent. A 94% yield of GVL was obtained with a Raney nickel catalyst, and a hydrogen pressure of 5 MPa at a temperature of 100-150... [Pg.42]

Benzyloxy-3-hydroxy-pentanoic acid ferf-butyl ester (92 )<7... [Pg.64]

Unidentified aliphatic acid a-n-butyryl-/ , y-hydroxy-pentanoic acid, a-n-hexyl-, y-dihydroxy-pentanoic acid, formic acid... [Pg.34]

A second P-substituted polyester poly-P-hydroxy pentanoate (PHP) has been extracted from sewage (43). The polyester is probably similar to PHB with respect to bacterial physiology. However the polymer has its own characteristic melting point and crystalline structure (44). [Pg.427]

The poly(HASCL) containing units other than 3HB and 3HV include different tercopolymers, such as poly(3HB-co-3HV-co-5HV) (R. eutropha) [90] and poly(3HB-co4HB) R. eutropha) [91]. Poly(3HB-co-3HV-co-5HV) and poly-(3HB-CO-4HB) are less crystalline and more biodegradable than poly(3HB-co-4HB). 3-Hydroxy-2,2-dimethyl-propanoic acid was polycondensed (Rhodocodus ruber) [92], as well as 3-pentenoic acid (Burkolderia) [93] and 4-pentanoic acid (Rhodospirilhum) [94] these acids were also copolycondensed with 3-hydroxy-butanoate, 3-hydroxy-pentanoate, and 3-hydroxy-2,2-dimethyl-propanoic acid. [Pg.64]

Hydroxy 2 methyl pentanoic acid (60% from 2 pentanone)... [Pg.809]

R = CH(CH,), (4R,5S)-5-hydroxy-4,6-dnnethyl-3-lwptwione R = C6H, 4S,5S)-5-hydroxy-4-m<>thyl-5-phenyI-3-pentano]ie... [Pg.468]

B homopolymers, 7 BF1PA. See 4,4 -Bis(4-hydroxy-phenyl)pentanoic acid (BHPA)... [Pg.578]

CN 5-[Hexahydro-5-hydroxy-4-(3-hydroxy-4-methyl-l-octen-6-ynyl)-2(l//)-pentalenylidene]pentanoic acid... [Pg.1048]

STEREOSELECTIVE ALDOL REACTION OF DOUBLY DEPROTONATED (RM+)-2-HYDROXY-1,2,2-TRIPHENYLETHYL ACETATE (HYTRA) (R)-3-HYDROXY-4-METHYLPENTANOIC ACID (Pentanoic acid, 3-hydroxy-4-methyl-, (R)-)... [Pg.20]

Methyl anti-3-hydroxy-2-methylpentanoate Pentanoic acid, 3-hydroxy-2-methyl, methyl ester, (R, R )- )- (11) (100992-75-4)... [Pg.39]

R)-Phenyl-(2 S)-[(phenylmethyl)[(2,4,6-trimethylphenyl)sulfonyl]amino]propyl (3R)-hydroxy-(2R), 4-dimethylpentanoate Pentanoic acid, 3-hydroxy-2,4-dimethyl-1-phenyl-2-... [Pg.123]

CHEMICAL NAME = sodium 4-amino-5-hydroxy-5-oxo-pentanoate CAS NUMBER = 142-47-2 (anhydrous) 6106-04-3 (monohydrate)... [Pg.181]

Desaturation of alkyl groups. This novel reaction, which converts a saturated alkyl compound into a substituted alkene and is catalyzed by cytochromes P-450, has been described for the antiepileptic drug, valproic acid (VPA) (2-n-propyl-4-pentanoic acid) (Fig. 4.29). The mechanism proposed involves formation of a carbon-centered free radical, which may form either a hydroxy la ted product (alcohol) or dehydrogenate to the unsaturated compound. The cytochrome P-450-mediated metabolism yields 4-ene-VPA (2-n-propyl-4pentenoic acid), which is oxidized by the mitochondrial p-oxidation enzymes to 2,4-diene-VPA (2-n-propyl-2, 4-pentadienoic acid). This metabolite or its Co A ester irreversibly inhibits enzymes of the p-oxidation system, destroys cytochrome P-450, and may be involved in the hepatotoxicity of the drug. Further metabolism may occur to give 3-keto-4-ene-VPA (2-n-propyl-3-oxo-4-pentenoic acid), which inhibits the enzyme 3-ketoacyl-CoA thiolase, the terminal enzyme of the fatty acid oxidation system. [Pg.92]

Pentanoate Ethyl 2-Fluoro-3-hydroxy-3-methyl- ElOb, 454 (Ketone + F-CH2-COOR) Propanoatc tert.-Butyl 2-Fluoro-2-methoxy- ElOa, 495 (Na F) 2-Propanole 3-Fluoro-l-(2-tetra-hydropyranoyloxy)- ElOb, 152 (Oxirane + R3N H,F3)... [Pg.655]

Octanoate Ethyl 2-Fluoro-3-hydroxy- E10b2, 52 (Educt) Pentanoate Ethyl 2-Fluoro-3-hydroxy-3,4,4-trimethyl- ElOb, 454... [Pg.679]

Pentanoate Ethyl 4-Benzyloxy-2-ethoxy-4-fluoro-3-hydroxy-ElOb,. 450 (R-CHO +... [Pg.719]

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