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Class Information
Number: 540/118
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Heterocyclic carbon compounds containing a hetero ring having chalcogen (i.e., oxygen, sulfur, selenium or tellurium) or nitrogen as the only ring hetero atoms > Cyclopentanohydrophenanthrene ring system containing > Oxygen containing hetero ring attached indirectly to the cyclopentanohydrophenanthrene ring system by nonionic bonding > The hetero ring is bonded directly to chalcogen which is bonded directly to the cyclopentanohydrophenanthrene ring system
Description: Compounds wherein the hetero ring is bonded directly to chalcogen (i.e., oxygen, sulfur, selenium or tellurium), which chalcogen is also bonded directly to the cyclopentanohydrophenanthrene ring system.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5670676 |
Process for preparation of 9.alpha. -chloro-11.beta. formyloxypregna-3.20-diones |
Sep. 23, 1997 |
| RE35517 |
Method, compositions, and compounds for modulating brain excitability |
May. 20, 1997 |
| 5602248 |
Process for preparation of 9.alpha.-chloro-11.beta.-formyloxypregna-3,20-diones |
Feb. 11, 1997 |
| 5420120 |
Anti-inflammatory glucocorticoid compounds for topical ophthalmic use |
May. 30, 1995 |
| 5278296 |
Production of hydroxysteryl glycoside compounds |
Jan. 11, 1994 |
| 5120723 |
Method, compositions, and compounds for modulating brain excitability |
Jun. 9, 1992 |
| 4885280 |
Novel 14-amino steroids |
Dec. 5, 1989 |
| 4822528 |
4-substituted 6-alkylidenandrosteine-3,17-dione derivatives and process for their preparation |
Apr. 18, 1989 |
| 4652405 |
Synthesis of 1.alpha.,25-dihydroxy-24R-fluorocholecalciferol and 1.alpha.,25-dihydroxy-24S-fluorocholecalciferol |
Mar. 24, 1987 |
| 4634692 |
Synthesis of 1.alpha.,25-dihydroxy-24R-fluorocholecalciferol and 1.alpha.,25-dihydroxy-24S-fluorocholecalciferol |
Jan. 6, 1987 |
| 4618456 |
Ethynylation of 16-methyl-17-keto steroids |
Oct. 21, 1986 |
| 4617297 |
Method of treating disease states by the administration of 1.alpha.,25,26-trihydroxycholecalciferol |
Oct. 14, 1986 |
| 4599330 |
Method of treating milk fever |
Jul. 8, 1986 |
| 4568491 |
Process for the preparation of cholesterol derivatives and novel intermediates therefor |
Feb. 4, 1986 |
| 4560557 |
Silicon and sulfur steroids as irreversible inhibitors of hormone biosynthesis |
Dec. 24, 1985 |
| 4512986 |
Progrestationally active steroids |
Apr. 23, 1985 |
| 4502991 |
23,23-Difluoro-1.alpha.,25-dihydroxy-vitamin D.sub.3 |
Mar. 5, 1985 |
| 4500460 |
23,23-Difluoro-25-hydroxy-vitamin D.sub.3 and process for preparing same |
Feb. 19, 1985 |
| 4500461 |
Cyanohydrin process |
Feb. 19, 1985 |
| 4472310 |
5.beta.-Hydroxy-.DELTA..sup.6 -steroids and process for the preparation thereof |
Sep. 18, 1984 |
| 4456553 |
Vitamin D.sub.3 derivatives, process for preparation thereof, and antigens comprising said derivatives to be used for preparation of antibodies for immunochemical assay and antibodies prepared |
Jun. 26, 1984 |
| 4421690 |
Process for the preparation of 24,24-difluoro-1.alpha.,25-dihydroxy vitamin D.sub.3 and intermediates obtained therefrom |
Dec. 20, 1983 |
| 4354972 |
Synthesis of steroids |
Oct. 19, 1982 |
| 4351767 |
Synthesis of 24,25-dihydroxycholesterol |
Sep. 28, 1982 |
| 4344888 |
24,25-Dihydroxycholestans and process for preparing the same |
Aug. 17, 1982 |
| 4310467 |
Process and intermediates for the synthesis of vitamin D.sub.3 metabolites |
Jan. 12, 1982 |
| 4305880 |
Process for preparing 24-fluoro-25-hydroxycholecalciferol |
Dec. 15, 1981 |
| 4292251 |
11.beta.-Substituted steroids |
Sep. 29, 1981 |
| 4284577 |
Novel vitamin D.sub.3 derivative and process for preparing the same |
Aug. 18, 1981 |
| 4267106 |
New process for the preparation 17.beta.-hydroxy-3-oxo-17.alpha.-pregnene and pregnadiene-21-carboxylic acid .gamma.-lactones |
May. 12, 1981 |
| 4239681 |
Androst-4-en-19-ols |
Dec. 16, 1980 |
| 4217279 |
Synthesis of steroids |
Aug. 12, 1980 |
| 4199577 |
Novel 1.alpha.-hydroxy-24-oxovitamin D.sub.3, its preparing process and the novel precursors thereof |
Apr. 22, 1980 |
| 4197286 |
Testosterone derivatives and assay method |
Apr. 8, 1980 |
| 4192871 |
Chemical compounds |
Mar. 11, 1980 |
| 4183852 |
Process for preparing 25-hydroxycholesterol |
Jan. 15, 1980 |
| 4179452 |
3.alpha.,6.alpha.-Dihydroxy-5.beta.-cholestan-24-one derivatives and process for preparing the same |
Dec. 18, 1979 |
| 4172076 |
Process for preparing steroidal acids and their intermediate derivatives |
Oct. 23, 1979 |
| 4162259 |
Fusidic acid derivatives |
Jul. 24, 1979 |
| 4155923 |
Process for the preparation of 17.beta.-hydroxy-20-alkoxypregnane-21-oic acid derivatives |
May. 22, 1979 |
| 4145357 |
Steroid derivatives and process for preparing the same |
Mar. 20, 1979 |
| 4139617 |
19-Oxygenated-androst-5-enes for the enhancement of libido |
Feb. 13, 1979 |
| 4125544 |
20/22/23/24-Oxa-7-oxocholesterols and esters thereof |
Nov. 14, 1978 |
| 4096142 |
14,19-Dioxygenated steroid compounds and their 14-dehydro analogs and process for the preparation thereof |
Jun. 20, 1978 |
| 4089852 |
Process for the preparation of 21-hydroxy-16-pregnen-20-one derivatives |
May. 16, 1978 |
| 4081537 |
.DELTA..sup.15 -Steroids and pharmaceutical compositions thereof |
Mar. 28, 1978 |
| 4075233 |
16-Dehydro steroids of the androstane series |
Feb. 21, 1978 |
| 4071625 |
19-Oxygenated-5.alpha.-androstanes for the enhancement of libido |
Jan. 31, 1978 |
| 4071624 |
Androst-4-en-19-ones for the enhancement of libido |
Jan. 31, 1978 |
| 4036864 |
Chemical process |
Jul. 19, 1977 |
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