摘要:
Steroids of the formula ##STR1## wherein represents a single or double bond,X is hydrogen, fluorine or methyl;Y is hydrogen, hydroxy or alkanoyloxy of 1-6 carbon atoms;Z is hydrogen or methyl;V is methylene, ethylidene, hydroxymethylene or vinylidene; andR.sub.1 is alkyl of 1-6 carbon atoms or alkyl of 2-6 carbon atoms with an oxygen atom between two of the carbon atoms;R.sub.2 is hydrogen or alkyl of 1-6 carbon atoms, orR.sub.1 and R.sub.2 together form a tri- or tetramethylene group provided that Y is hydroxy or alkanoyloxy;have pharmacological activity and are useful as intermediates for preparing other pharmacologically active steroids.
摘要:
Corticoids of the formula ##STR1## wherein represents a single bond or a double bond;X is hydrogen, fluorine, chlorine or methyl;Y is hydrogen and Z is hydrogen, fluorine or chlorine, orY and Z together are a carbon-to-carbon bond;V is .beta.-hydroxymethylene, .beta.-chloromethylene or carbonyl;W is methylene, ethylidene or vinylidene;Q is oxygen or sulfur;R.sub.1 is alkyl of 1-8 carbon atoms, alkyl of 2-8 carbon atoms with an oxygen atom between two of the carbon atoms or benzyl, and R.sub.2 is hydrogen or alkyl of 1-4 carbon atoms, orR.sub.1 and R.sub.2 collectively are trimethylene or tetramethylene; andR.sub.3 is hydrogen, fluorine, chlorine, hydroxy, or hydroxy esterified by a C.sub.1-16 hydrocarbon carboxylic acid have valuable pharmacological properties, e.g., anti-inflammatory activity.
摘要:
The side chains of sterols are degraded by fermentation with microorganisms capable of doing so in an improved manner by employing in such fermentations sterol derivatives of the formula ##STR1## wherein n is 1 or 2; R.sub.1 is H or lower alkyl, R.sub.2 is alkyl, whose chain optionally is interrupted by an oxygen atom, or when n is 2, also a hydrogen atom; and R.sub.3 is a sterol side chain.
摘要:
A process for the extraction of aromatic (e.g., phenyl-containing) amino acids from an aqueous phase (solution) containing them, comprising combining the aqueous phase with a tenside of the formulaR--U--SO.sub.3 XwhereinR is alkyl or cycloalkyl each of 4-18 carbon atoms; or phenyl or naphthyl, each optionally substituted by alkyl groups, and having up to 18 carbon atoms total.U is a carbon-to-sulfur bond or an oxygen atom, andX is an alkali metal ion;acidifying the aqueous phase to a pH value of 2.0-2.5; andextracting the aqueous phase with an alcohol, a ketone, or a carboxylic acid alkyl ester, each containing 4-6 carbon atoms.
摘要:
A process for the production of arabinonucleotides of general formula I ##STR1## in which X represents a hydrogen atom or a fluorine atom, is described, which is characterized in that an arabinonucleoside of general formula II ##STR2## in which X has the above-mentioned meaning, is fermented in the presence of an aryl phosphate of general formula III ##STR3## in which Y symbolizes a hydrogen atom or a nitro group and Z symbolizes two hydrogen atoms or two alkali metal atoms, with a microorganism that is capable of phosphorylating nucleosides.
摘要:
A process for the production of ergoline derivatives of general formula I is described ##STR1## in which the bonds represent two single-bonds or a double bond and a single bond.R.sub.1 means a hydrogen atom or an alkyl group with 1-6 carbon atomsR.sub.2 symbolizes a hydrogen atom or an alkyl group with 1-6 carbon atoms,R.sub.3 represents a carboxyl group or a grouping of formula--CONR.sub.4 R.sub.5 or --NHCQNR.sub.6 R.sub.7with R.sub.4 and R.sub.5 meaning hydrogen or an alkyl radical with 1-6 carbons atoms optionally substituted by a hydroxy group and R.sub.6 and R.sub.7 meaning an alkyl group containing 1-4 carbon atoms and Q meaning an oxygen or sulfur atom.
摘要:
A process for preparing 11.beta.,21-dihydroxy-2'-methyl-5'.beta.H-1,4-pregnadieno(16,17-d)-oxazole-3,20-dione, comprises fermenting 11.beta.,21-dihydroxy-2'-methyl-5'.beta.H-4-pregneno (16,17-d)-oxazole-3,20-dione with a living culture of Arthrobacter simplex.
摘要:
Sterol derivatives of the formula ##STR1## wherein R.sub.1 is a hydrogen atom and R.sub.2 is lower alkoxy, or R.sub.1 and R.sub.2 collectively are lower alkylenedioxy and R.sub.3 is a sterol hydrocarbon side chain are converted to the corresponding androsten-17-ones by the oxidative degradation activity of a species of microorganism which degrades sterol side chains, preferably of the genus Mycobacterium. The ether group of those compounds wherein R.sub.1 is a hydrogen atom and R.sub.2 is lower alkoxy, and the corresponding 17.beta.-hydroxy and 17.alpha.-hydrocarbon-17.beta.-hydroxy compounds is cleaved by reaction with an alkanoic acid chloride or anhydride in the presence of a Lewis acid.
摘要:
A process for the production of 17.alpha.-hydroxy-3-methoxy-8,14-seco-1,3,5 (10),9(11)estratetraen-14-one by fermentation of 3-methoxy-8,14-seco-1,3,5(10),9(11) -estratetraene-14,17-dione with a live culture of Kloeckera magna is described, which is characterized in that the substrate is reacted in the form of a solventless aqueous suspension with an average grain size of 0.2 to 5 .mu.m.
摘要:
The invention relates to a process for the production of arabinonucleosides of general formula I ##STR1## in which X represents a hydrogen atom or a fluorine atom, from triacetates of general formula II ##STR2## in which X has the above-mentioned meaning, and the groups Ac respectively mean acetyl groups, which is characterized in that an esterase or lipase is caused to act on these compounds.