摘要:
Invented are substituted acrylate analogues of steroidal synthetic compounds, pharmaceutical compositions containing these compounds, and methods of using these compounds to inhibit steroid 5-.alpha.-reductase. Also invented are intermediates used in preparing these compounds.
摘要:
Novel prednisolone derivatives modified at C-17,C-20 and/or C-21 positions. Many of the compounds are anti-inflammatory agents which do not significantly suppress the pituitary-adrenal axis.
摘要:
The compounds of the present invention are irreversible and highly selective inhibitors of the cytochrome P-450 cholesterol side chain cleavage (P-450scc) enzyme responsible for the first and rate limiting step of steroid hormone biosynthesis by the adrenal glands.
摘要:
THERE IS PROVIDED A NOVEL METHOD OF SYNTHEESIZING 5ABUFADIENOLIDES, WHICH ARE USEFUL INTERMEDIATES IN THE TOTAL SYNTHESIS OF BUFALIN, A CARDIAC ACTIVE COMPOUND. EPIANDROSTERONE ACETATE IS CONVERTED INTO 3B - ACETOXYL-5APREGNANE-21-AL WHICH UNDERGOES CHAIN EXTENSION TO METHYL 3B-ACETOXYL-20-FORMYL-21-NOR-5A-CHOLANATE WHICH IS RING CLOSED TO FORM THE 3B - ACETOXY-5-A-BUF-20(21)-ENOLIDE WHICH IS DEHYDROGENATED TO THE CORRESPONDING BUFADIENOLIDE.
摘要:
Compounds of the formula: ##STR1## wherein one X is COOR, CH.sub.2 COOR, CH(COOR).sub.2, CONHR, CH.sub.2 CONHR, or CNremaining X's are H, F, CH.sub.3, OH, COOR, CH.sub.2 COOR, CH(COOR).sub.2, CONHR, CH.sub.2 CONHR, or CN;Y is ##STR2## R is H, alkyl of 1-5 carbon atoms, or benzyl; R.sub.1 is CH.sub.2 OR.sub.3, COOR, or CONHR;R.sub.2 is H, OR.sub.3, or BR;R.sub.3 is H, COR.sub.4, or tetrahydropyranyl;R.sub.4 is alkyl of 1-5 carbon atoms or benzyl;R.sub.5 is H or COR.sub.4 ; represents a single or double bond; represents .alpha.-position, .beta.-position, or a mixture of .alpha.- and .beta.-positions; and--- represents .alpha.-position;and methods for preparing the same.
摘要:
20-Cyano-17.alpha.-H steroids having as the 17-position substituent the group ##EQU1## wherein R is H, alkyl of 1-8 carbon atoms or benzyl, having a 13-methyl or 13-ethyl group and which are unsubstituted or substituted with an .alpha.-methyl group in the 16-position are converted to the corresponding 20-keto steroids by reaction in an aprotic solvent with a deprotonating agent containing an alkali metal, an alkaline earth metal, copper(I) or thallium(I), and optionally additionally with a copper(I) salt or a thallium(I) salt or a silver(I) salt, and thereafter conducting an oxidative splitting reaction with oxygen. The thus-produced 17.beta.-oxalyl steroids possess pharmacological activity, e.g., anti-inflammatory activity, or are useful as intermediates for the production of pharmacologically active steroids.
摘要:
The invention relates to a method for representing compounds of the general formula (1). The invention further relates to the hitherto unknown compounds of general formulas (5, 6 and 7) in the form of intermediate products and to the use of 4,4-dimethyl-3&bgr; hydroxypregna-8,14-diene-21-carboxylic acid esters of the general formula (1) for producing 4,4-dimethyl-5&agr;-cholesta-8,14,24-triene-3&bgr;-ol (2).
摘要:
Compounds of the formula: ##STR1## wherein X is H, F, Cl, or CH.sub.3and Y is ##STR2## wherein R.sub.1 is H, alkyl of 1-5 carbon atoms, phenyl, or benzyl;R.sub.2 is COOR.sub.6, R.sub.5 COOR.sub.6, or R.sub.5 CONHR.sub.6 ;R.sub.3 is H, F, OH, or CH.sub.3 ;R.sub.4 is CH.sub.2 OH, CH.sub.2 OCOR.sub.6, COOR.sub.6, or CONHR.sub.6 ;R.sub.5 is alkyl of 1-3 carbon atoms;R.sub.6 is alkyl of 1-5 carbon atoms, or benzyl; represents a single or double bond;.about. represents .alpha.-position, .beta.-position, or a mixture of both .alpha.- and .beta.-positions; and-- represents .alpha.-position;and methods for preparing the same.
摘要:
Invented are substituted acrylate analogues of steroidal synthetic compounds, pharmaceutial compositions containing the compounds, and methods of using these compounds to inhibit steroid 5-.alpha.-reductase including using these compounds to reduce prostate size. Also invented are intermediates used in preparing these compounds.