STEROIDS (seco-steroids C07C)

Introduced: July 1974

Description

C07J covers the chemical synthesis, preparation, and characterization of steroid compounds and their derivatives. This subclass includes methods for producing natural steroids (such as cholesterol, bile acids, and sex hormones) and synthetic steroid analogues, as well as chemical transformations affecting the steroid nucleus or side chains. The classification encompasses both the isolation and synthetic modification of steroid structures across pharmaceutical, cosmetic, and industrial applications.

Title

Titles differ between systems:

IPC: STEROIDS

CPC: STEROIDS (seco-steroids C07C)

Full Title

Full titles differ between systems:

IPC:

STEROIDS

CPC:

STEROIDS (seco-steroids C07C)

Additional Content IPC

Glossary

A-, B-, C- or D-homosteroid A-homosteroid A-homosteroids B-homosteroid B-homosteroids C-homosteroid C-homosteroids D-homosteroid D-homosteroids Compound in which a cyclopenta[a]hydrophenanthrene skeleton is modified by expansion of rings A, B, C or D correspondingly by one atom (the prefix "homo" may also mean that one methyl or methylene group is added in certain position, e.g. 18-homosteroids). A-, B-, C- or D-bishomosteroid A-bishomosteroid A-bishomosteroids B-bishomosteroid B-bishomosteroids C-bishomosteroid C-bishomosteroids D-bishomosteroid D-bishomosteroids Compound in which a cyclopenta[a]hydrophenanthrene skeleton is modified by expansion of rings A, B, C or D correspondingly by two atoms. A-, B-, C- or D-norsteroid A-norsteroid A-norsteroids B-norsteroid B-norsteroids C-norsteroid C-norsteroids D-norsteroid D-norsteroids Compound in which a cyclopenta[a]hydrophenanthrene skeleton is modified by contraction of rings A, B, C or D correspondingly by one atom (the prefix "nor" may also mean that one methyl group in certain position is substituted by hydrogen atom, e.g. 19-norsteroids, or one methylene group among non-ring members in certain position is absent). A-, B-, C- or D-bisnorsteroid A-bisnorsteroid A-bisnorsteroids B-bisnorsteroid B-bisnorsteroids C-bisnorsteroid C-bisnorsteroids D-bisnorsteroid D-bisnorsteroids compound in which a cyclopenta[a]hydrophenanthrene skeleton is modified by contraction of rings A, B, C or D correspondingly by two atoms. alpha relates to stereoisomers and designates atoms or groups of atoms that are arranged below the plane of a ring system (the bond between such atoms or groups of atoms and a ring system is represented by a dotted line) provided that a cyclopenta[a]hydrophenanthrene skeleton is drawn on the plane so that rings A, B, C and D are arranged from left to right. beta relates to stereoisomers and designates atoms or groups of atoms that are arranged above the plane of a ring system (the bond between such atoms or groups of atoms and a ring system is represented by a thick or uninterrupted line) provided that a cyclopenta[a]hydrophenanthrene skeleton is drawn on the plane so that rings A, B, C and D are arranged from left to right. Bile acids Steroids having a hydroxy-group and a five-carbon-atom side-chain terminating in a carboxyl group, e.g. cholic acid. Normal steroid normal steroids Compound containing non-modified cyclopenta[a]hydrophenanthrene skeleton. Seco-steroid Seco-steroids Compound which can be obtained from steroids by a break of one of the bonds in cyclopenta[a]hydrophenanthrene skeleton. Sterols sterol Steroid alcohols; contain cyclopenta[a]hydrophenanthrene skeleton plus an 8 to 10-carbon atom side-chain and a hydroxy-group, e.g. cholesterol, ergosterol". Substitution of steroids in certain position means substitution of hydrogen atom bound to the carbon atom of the cyclopenta[a]hydrophenanthrene skeleton in that position.

Limiting references

Seco-steroids Fermentation or enzyme-using processes to synthesise steroids Electrolytic production of organic compounds

IPC and CPC are identically structured here. All 25 subcodes exist in both systems.

22 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1974.

Child Classifications

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C07J 1/00 Normal steroids containing carbon, hydrogen, halogen or oxygen, not substituted in position 17 beta by a carbon atom, e.g. estrane, androstane since 1974 +2 CPC IPC+CPC Available in IPC and CPC
C07J 11/00 Normal steroids containing carbon, hydrogen, halogen or oxygen, not substituted in position 3 since 1974 IPC+CPC Available in IPC and CPC
C07J 13/00 Normal steroids containing carbon, hydrogen, halogen or oxygen having a carbon-to-carbon double bond from or to position 17 since 1974 +3 CPC IPC+CPC Available in IPC and CPC
C07J 15/00 Stereochemically pure steroids containing carbon, hydrogen, halogen or oxygen having a partially or totally inverted skeleton, e.g. retrosteroids, L-isomers since 1974 +1 CPC IPC+CPC Available in IPC and CPC
C07J 17/00 Normal steroids containing carbon, hydrogen, halogen or oxygen, having an oxygen-containing hetero ring not condensed with the cyclopenta(a)hydrophenanthrene skeleton (cardanolide, bufanolide C07J19/00) since 1974 +1 CPC IPC+CPC Available in IPC and CPC
C07J 19/00 Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 by a lactone ring since 1974 +1 CPC IPC+CPC Available in IPC and CPC
C07J 21/00 Normal steroids containing carbon, hydrogen, halogen or oxygen having an oxygen-containing hetero ring spiro-condensed with the cyclopenta(a)hydrophenanthrene skeleton since 1974 +2 CPC IPC+CPC Available in IPC and CPC
C07J 3/00 Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by one carbon atom since 1974 +1 CPC IPC+CPC Available in IPC and CPC
C07J 31/00 Normal steroids containing one or more sulfur atoms not belonging to a hetero ring since 1974 +2 CPC IPC+CPC Available in IPC and CPC
C07J 33/00 Normal steroids having a sulfur-containing hetero ring spiro-condensed or not condensed with the cyclopenta(a)hydrophenanthrene skeleton since 1974 +2 CPC IPC+CPC Available in IPC and CPC
C07J 41/00 Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring since 1974 +2 CPC IPC+CPC Available in IPC and CPC
C07J 43/00 Normal steroids having a nitrogen-containing hetero ring spiro-condensed or not condensed with the cyclopenta(a)hydrophenanthrene skeleton since 1974 +2 CPC IPC+CPC Available in IPC and CPC
C07J 5/00 Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane and substituted in position 21 by only one singly bound oxygen atom, since 1974 +2 CPC IPC+CPC Available in IPC and CPC
C07J 51/00 Normal steroids with unmodified cyclopenta(a)hydrophenanthrene skeleton not provided for in groups C07J1/00 - C07J43/00 since 1974 IPC+CPC Available in IPC and CPC
C07J 53/00 Steroids in which the cyclopenta(a)hydrophenanthrene skeleton has been modified by condensation with a carbocyclic rings or by formation of an additional ring by means of a direct link between two ring carbon atoms, since 1974 +2 CPC IPC+CPC Available in IPC and CPC
C07J 61/00 Steroids in which the cyclopenta(a)hydrophenanthrene skeleton has been modified by contraction of only one ring by one or two atoms since 1974 IPC+CPC Available in IPC and CPC
C07J 63/00 Steroids in which the cyclopenta(a)hydrophenanthrene skeleton has been modified by expansion of only one ring by one or two atoms since 1974 +4 CPC IPC+CPC Available in IPC and CPC
C07J 65/00 Steroids in which the cyclopenta(a)hydrophenanthrene skeleton has been modified by contraction of two rings, each by one atom since 1974 IPC+CPC Available in IPC and CPC
C07J 67/00 Steroids in which the cyclopenta(a)hydrophenanthrene skeleton has been modified by expansion of two rings, each by one atom since 1974 IPC+CPC Available in IPC and CPC
C07J 69/00 Steroids in which the cyclopenta(a)hydrophenanthrene skeleton has been modified by contraction of only one ring by one atom and expansion of only one ring by one atom since 1974 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class C07,2013–2023, worldwide · Source: EPO PATSTAT

CHINESE ACADEMY OF SCIENCES 12,697
ROCHE CH 11,347
SINOPEC (CHINA PETROCHEMICAL CORPORATION) 11,024
NOVARTIS CH 9,356
BASF (BADISCHE ANILIN & SODA FABRIK) DE 8,531
BRISTOL-MYERS SQUIBB COMPANY US 7,320
LG CHEM KR 7,245
REGENERON PHARMACEUTICALS US 6,816
HARVARD UNIVERSITY US 6,190
GENENTECH US 5,922

Top Applicants (CPC)

Class C07,2013–2023, worldwide · Source: EPO PATSTAT

ROCHE CH 12,683
NOVARTIS CH 10,775
CHINESE ACADEMY OF SCIENCES 10,619
BASF (BADISCHE ANILIN & SODA FABRIK) DE 9,511
REGENERON PHARMACEUTICALS US 8,426
BRISTOL-MYERS SQUIBB COMPANY US 7,979
LG CHEM KR 7,978
HARVARD UNIVERSITY US 7,706
UNIVERSITY OF CALIFORNIA US 7,455
SINOPEC (CHINA PETROCHEMICAL CORPORATION) 7,219