Class 552/634 - Carbon or halogen bonded directly at the 1- or 3-position

Subclass of Class 552 - Organic compounds -- part of the class 532-570 series
Definition: Compounds wherein carbon or halogen is bonded directly at
No. of patents: 28
Last issue date: 08/26/2003

Number	Title	Issue Date
6610866	Stereoselective synthesis of 24-hydroxylated compounds useful for the preparation of aminosterols, vitamin D analogs, and other compounds A method is described for stereoselectively reducing an unsaturated alkyl ketone substituent attached to a fused ring base. In this method, the unsaturated alkyl ketone reacts with a chiral oxazaborolidine reagent. This reaction stereoselectively reduces ...	08/26/2003
5908945	Alkylating agent and 1,4-addition process of an alkyl group onto an ଱,ଲ-unsaturated ketone compound Disclosed is an alkylating agent that contains an aluminum reagent Alk3-m AlLm, in which Alk means a methyl, ethyl, n- or i-propyl, n-, i- or tert-butyl, pentyl, hexyl, heptyl or octyl group, which all can also be branched, L means a...	06/01/1999
5908944	Methylation or ethylation agent and process for 1,4-addition of a methyl or ethyl group to an ଱, ଲ-unsaturated keto compound This invention describes a new methylation or ethylation agent containing trimethyl aluminum or dimethyl zinc or triethyl aluminum as methyl or ethyl source, which additionally contains catalytic amounts of one or more copper(I) and/or copper(II) compound...	06/01/1999
5723455	Antiandrogenic agents and related pharmaceutical compositions and methods of use Novel antiandrogenic agents are provided. An exemplary group of compounds has the structural formula (I) ##STR1## wherein R1 through R10, a and b are as defined herein. Pharmaceutical compositions and methods for using the compo...	03/03/1998
5581002	Process for the production of 1-଱-(carboxyalkyl)-testosterone The present invention discloses a process for making 1-଱-(carboxyalkyl)testosterone having the following formula: ##STR1## The process involves protecting the 17 position of 1,4-androstadien-17 ଲ-ol-3-one with TBDMS, alkylating with an al...	12/03/1996
5523428	Process for the production of 1-methyl-3-keto-Ɗ¹,4 steroids A process for the production of 1-methyl-3-keto-Ɗ1,4 steroids of general formula I ##STR1## in which St symbolizes the radical of asteroid molecule, where a 3-keto-Ɗ1,4 steroid of general formula II ##STR2## in which...	06/04/1996
5391778	2-iodo-3-keto-Ɗ⁴ steroids, process for their production, as well as their further processing The new intermediate products of general formula I ##STR1## in which R1 stands for a hydrogen atom or a straight-chain or branched alkyl group with 1 to 4 carbon atoms, R2 stands for a hydrogen atom or a methyl group, R3 s...	02/21/1995
5387583	Compositions containing corticosteroids or analogues thereof and corticosteroid buffering effective amounts of 5-androstene 3B, 17B or 5-androstene 3B, 7B, 17B triol or analogues thereof 3ଲ,17ଲ-androstenediol ("�") and 3ଲ,7ଲ,17ଲ-androstenetriol ("򳊮T") may be used to counteract the antiproliferative and immunosuppressive effects of hydrocortisone and other corticosteroids (i.e., to act as buff...	02/07/1995
5010071	Androstane derivatives Androstane derivatives of the general Formula I ##STR1## in which R1 represents a hydrogen atom or a methyl group, X and Y each mean hydrogen atoms or together a carbon-carbon bond, and R2 symbolizes a hydrogen atom or an alkyl group with...	04/23/1991
4898694	17-Hydroxy-steroids Compounds of the formulae: ##STR1## are useful as anti-cancer, anti-obesity, anti-diabetic, anti-coronary agents, anti-aging agents, anti-hypolipidemic agents and anti-autoimmune agents....	02/06/1990
4871482	Process for the preparation of 1-methylandrosta-1,4-diene-3,17,dione, and the novel intermediates for this process 1-Methylandrosta-1,4-diene-3,17-dione is prepared by a process wherein a 3-enol ester or 3-enol ether of general Formula II ##STR1## wherein R1 is an alkyl residue of 1-3 carbon atoms or an acyl or trialkylsilyl group of up to 10 carbon at...	10/03/1989
4808616	6-substituted androsta-1,4-diene-3,17-diones The invention relates to 6-alkylidenandrosta-1,4-diene-3,17-dione derivatives, having the following general formula ##STR1## wherein each of R and R2, independently, is hydrogen or C1 -C6 alkyl and R1 is hy...	02/28/1989
4673673	17଱-alkyl-17ଲ-hydroxy-1଱-methyl-4-androsten-3-ones, their production and use pharmaceutically 17଱-Alkyl-17ଲ-hydroxy-1଱-methyl-4-androsten-3-ones of the formula ##STR1## wherein R is a straight-chain alkyl residue of 3-8 carbon atoms, i.e., C3-8 -n-alkyl, are pharmacologically active compounds distinguished by...	06/16/1987
4591585	1-alkyl-androsta-1,4-diene-3,17-diones their production and pharmaceutical preparations containing same 1-Alkyl androsta-1,4-diene-3,17-diones of the formula ##STR1## wherein R1 is a methyl, ethyl, hydroxymethyl, C1 -C3 -alkoxymethyl, or C1 -C4 -alkanoyloxymethyl group, R6 is a hydrogen ...	05/27/1986
4587235	Novel androstane derivatives, process for their production, and pharmaceutical preparations containing them Androstane derivatives of Formula I ##STR1## wherein is a single bond or a double bond, R1 is methyl or ethyl, R2 is hydrogen or alkyl of 1-8 carbon atoms, --X-- is --(CH2)n --, --CH.dbd.CH(CH2)m	05/06/1986
4558041	Antiandrogenic 17଱-substituted steroids 17଱-substituted steroids of the formula ##STR1## wherein R1 is hydrogen, acyl, alkyl, alkenyl, alkyl or alkenyl interrupted by an oxygen atom, cyclopentyl, or tetrahydropyranyl, R2 is alkyl or alkenyl of 2-6 carbon atoms, X is ...	12/10/1985
4457925	Androstane derivatives, process for their production, and pharmaceutical preparations containing them Androstane derivatives of Formula I ##STR1## wherein ---- is a single bond or a double bond, R1 is methyl or ethyl, R2 is hydrogen or alkyl of 1-8 carbon atoms, --X-- is --(CH2)n --, --CH.dbd.CH(CH2)m...	07/03/1984
4456600	Antiandrogenic 17଱-alkyl steroids 17଱-substituted steroids of the formula ##STR1## wherein R1 is hydrogen, acyl, alkyl, alkenyl, alkyl or alkenyl interrupted by an oxygen atom, cyclopentyl, or tetrahydropyranyl, R2 is alkyl or alkenyl of 2-6 carbon atoms, X is ...	06/26/1984
4312864	Branched chain and cycloaliphatic esters of the androstane and destrane series and pharmaceutical compositions containing same There are disclosed branched chain and cycloaliphatic esters of steroids having the formula: ##STR1## or the 5଱H analog thereof. The steroid esters have androgenic, anabolic, oestrogenic or anti-oestrogenic properties depending upon the ri...	01/26/1982
4307087	Branched chain and cycloaliphatic esters of the androstane and oestrane series and pharmaceutical compositions containing same There are disclosed branched chain and cycloaliphatic esters of steroids having the formula: ##STR1## where R is H or CH3 ; R1 is H or CH3 ; R2 is H or CH3 ; R3 is H, OH, CH3 or ...	12/22/1981
4239681	Androst-4-en-19-ols Derivatives of androst-4-en-19-ol are useful for enhancing libido and related psychic attitudes....	12/16/1980
4212864	Branched chain and cycloaliphatic esters of the androstane and oestrane series and pharmaceutical compositions containing same There are disclosed branched chain and cycloaliphatic esters of steroids having the formula: ##STR1## or the 5଱H analog thereof, where R is H or CH3 ; R1 is H or CH3 ; R2 is H or CH3 ; R3	07/15/1980
4181669	Steroid esters preparation This invention relates to an improved steroid ester synthesis in which a carbodiimide, in combination with an acid catalyst, is used as condensing agent....	01/01/1980
4180504	Method for the preparation of esters This invention relates to an improved ester synthesis in which a carbodiimide, in combination with an acid catalyst, is used as condensing agent....	12/25/1979
4071625	19-Oxygenated-5଱-androstanes for the enhancement of libido Derivatives of 19-oxygenated-5଱-androstanes are described which are useful in enhancing the libido and related psychic attitudes in mammals....	01/31/1978
4071624	Androst-4-en-19-ones for the enhancement of libido The present invention concerns androst-4-en-19-ones which are useful in the enhancement of libido and related pyschic attitudes....	01/31/1978
4022769	Androst-4-en-19-ones The present invention concerns derivatives of androst-4-en-19-one which are useful in the enhancement of libido and related psychic attitudes....	05/10/1977
3935245	Radioactively labeled steroid derivatives Steroids bearing the substituent --X-NR1 R2 wherein --NR1 R2 is a tritium of carbon-14 labeled amino or amino-acid group and --X-- is --R3 --, --OCOR3 --, =N--O--R3 -- or --NHCOR...	01/27/1976

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Class 552/634 - Carbon or halogen bonded directly at the 1- or 3-position