摘要:
A prostaglandin production method according to the present invention comprises reacting an unsaturated fatty acid with cyclooxygenase in the presence of a reducing agent. According to the present invention, it is possible to produce prostaglandins at a high yield.
摘要:
Es werden 15a-Hydroxyprostaglandin-Zwischenprodukte der Formel worin
R 1 Phenoxymethyl, das am Phenylrest durch Halogen oder Trifluormethyl substituiert sein kann, oder Alkyl mit 1-5 C-Atomen und R 2 Wasserstoff, Acetyl, Benzoyl oder p-Phenylbenzoyl bedeuten, stereospezifisch erhalten, wenn man die entsprechenden 15-Ketone der Formel mit einem Stamm des Mikroorganismus Kloeckera, Saccharomyces oder Hansenula reduziert.
摘要:
A method for producing prostaglandins comprises converting unsaturated fatty acids contained in an alga belonging to genus Gracilaria or genus Hypnea into prostaglandins by the action of an enzyme present in the alga in water or a water-containing solvent so that the prostaglandins are released from the alga into the water or the water-containing solvent and then recovering the prostaglandins from the solvent; or comprises adding an unsaturated fatty acid to water or a water-containing solvent, converting the unsaturated fatty acid into prostaglandins by the action of the enzyme present in the alga belonging to genus Gracilaria or genus Hypnea in the solvent and then recovering prostaglandins from the solvent. The purification of prostaglandins can effectively be performed by a method which comprises contacting a solution of prostaglandins in water or a water-containing organic solvent with a non-polar porous synthetic resin having a specific surface area of not less than 350 m²/g and a fine pore volume of not less than 0.8 mℓ /g to thus adsorb the prostaglandins to the resin and then eluting the adsorbed prostaglandins with an organic solvent or a water-containing organic solvent for elution. The method makes it possible to provide desired prostaglandins in high yield and to produce prostaglandins in industrial scale.
摘要:
The disclosed process enables to enantioselectively reduce the 15-ketonic group contained within bicyclic intermediary products of prostaglandin and to transform them into hydroxy compounds having general formula (I), wherein X is oxygen or a CH2 group, A is a group trans-CH=CH- or a group -C=C-, B is oxygen, the residues (a), or (b) or (c), wherein R3 is C1-C4-alkyl group, R1 is hydrogen, tetrahydropyranyl, benzoyl, tertiary butyldimethylgilyl or tertiary butyldiphenylgilyl and R2 are the residues (d), (e) or (f). The process is characterized in that a ketone having general formula (II), wherein A, B, X, R1 and R2 have the meaning given hereabove, is treated with Candida or Pichia strains, and in that the resulting 15-hydroxy-prostaglandin intermediate product is isolated.
摘要:
The present invention relates to a pasteurized food product having a water activity of at least 0.80, preferably at least 0.85 and containing a proline specific protease.