STEROIDS (seco-steroids C07C)

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.

25 direct subcodes

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
C07J 11/00 Normal steroids containing carbon, hydrogen, halogen or oxygen, not substituted in position 3
C07J 13/00 Normal steroids containing carbon, hydrogen, halogen or oxygen having a carbon-to-carbon double bond from or to position 17
C07J 15/00 Stereochemically pure steroids containing carbon, hydrogen, halogen or oxygen having a partially or totally inverted skeleton, e.g. retrosteroids, L-isomers
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)
C07J 19/00 Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 by a lactone ring
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
C07J 3/00 Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by one carbon atom
C07J 31/00 Normal steroids containing one or more sulfur atoms not belonging to a hetero ring
C07J 33/00 Normal steroids having a sulfur-containing hetero ring spiro-condensed or not condensed with the cyclopenta(a)hydrophenanthrene skeleton
C07J 41/00 Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring
C07J 43/00 Normal steroids having a nitrogen-containing hetero ring spiro-condensed or not condensed with the cyclopenta(a)hydrophenanthrene skeleton
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,
C07J 51/00 Normal steroids with unmodified cyclopenta(a)hydrophenanthrene skeleton not provided for in groups C07J1/00 - C07J43/00
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,
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
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
C07J 65/00 Steroids in which the cyclopenta(a)hydrophenanthrene skeleton has been modified by contraction of two rings, each by one atom
C07J 67/00 Steroids in which the cyclopenta(a)hydrophenanthrene skeleton has been modified by expansion of two rings, each by one atom
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

Top Applicants

Top 10 applicants by patent filingsfor 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