摘要:
The improvement in a process for the production of 17-hydroxyandrosta-1,4-dien-3-one and androsta-1,4-diene-3,17-dione by the microbiological oxidation of a sterol, its 4-en-3-one derivative or its 1,4-dien-3-one derivative, which comprises adding to the culture medium at least one glyceride-containing substance selected from the group consisting of glycerides, fats, oil seeds and oil fruits in an amount sufficient that the culture medium contains at least 0.3 percent by weight of glycerides.
摘要:
1-Hydroxy-9-keto-3-alkyl-dibenzo[b,d]pyrans or 1,9-dihydroxy-3-alkyl-dibenzo[b,d]pyrans are oxygenated on the penultimate carbon of the alkyl side chain by fermentation with a strain of the micro-organism Bacillus cereus.
摘要:
The improvement in a process for the production of 17-hydroxyandrosta-1,4-dien-3-one and androsta-1,4-diene-3,17-dione by the microbiological oxidation of a sterol, its 4-en-3-one derivative or its 1,4-dien-3-one derivative, which comprises adding to the culture medium at least one glyceride-containing substance selected from the group consisting of glycerides, fats, oil seeds and oil fruits in an amount sufficient that the culture medium contains at least 0.3 percent by weight of glycerides.
摘要:
Valuable steroid intermediates, 9.alpha.-hydroxyandrost-4-ene-17.beta.-ol-3-one (9.alpha.--OH testosterone), 9.alpha.-hydroxy-3-ketobisnorchol-4-en-22-ol (9.alpha.--OH BN alcohol) and 9.alpha.---hydroxy-3-ketobisnorchol-4-en-22-oic methyl ester (9.alpha.--OH BN acid methyl ester), prepared by microbiological conversion of steroids having 17-alkyl side chains of 8 to 10 carbons.
摘要:
Novel microbial transformation process to selectively convert steroids with or without 17-alkyl side chains of from 2 to 10 carbon atoms, inclusive, to 3a.alpha.-H-4.alpha.-�3'-propanol!-7a.beta.-methylhexahydro-1,5-indanedione hemiketal having the following structure: ##STR1## This compound can be used as an intermediate to make useful 19-nor steroids.
摘要:
Mutants which are used in a novel microbiological process to selectively degrade steroids having 17-alkyl side chains of from 2 to 10 carbon atoms, inclusive, to 9.alpha.-hydroxyandrostenedione (9.alpha.-OH AD). 9.alpha.-OH AD is a valuable intermediate to make useful steroids.
摘要:
A process for preparing hydroxycyclopentenone derivatives, which comprises cultivating a microorganism belonging to the genus Aspergillus in a medium containing a cyclopentenone derivative expressed by the formula (1)
WHEREIN R is a hydrogen atom or a lower alkyl group, and m is an integer of 1 to 6, TO FORM IN SAID MEDIUM A HYDROXYCYCLOPENTENONE DERIVATIVE EXPRESSED BY THE FORMULA (2)
WHEREIN R is the same as defined above, and n is equal to m or, (m - 2) when m is from 3 to 6, AND THEN RECOVERING THE HYDROXYCYCLOPENTENONE DERIVATIVE.
摘要:
In a process for preparing 21-hydroxy-20-methylpregnane derivatives by fermenting a zoosterol or a phytosterol with a culture of Mycobacterium spec. NRRL B-3683 or NRRL B-3805 or a variant or mutant thereof,an improvement comprises conducting the fermentation at a pH value of 6.0-8.0 in the presence of an amount of borate ions or an organic boron compound effective to increase the yield of the 21-hydroxy-20-methylpregnane derivatives produced.
摘要:
Novel compounds prepared by microbial transformation using novel mutants to selectively degrade steroids with or without 17-alkyl side chains of from 2 to 10 carbon atoms, inclusive. These compounds can be used as intermediates to make useful steroids.
摘要:
This invention discloses an improved biotransformation process for the introduction of a double bond between carbon atoms 1 and 2 in corticoids by Septomyxa without degradation of the corticoid side chain.