This subclass covers compounds containing a cyclopenta[a]hydrophenanthrene skeleton or a ring structure derived therefrom:
-
by contraction or expansion of one ring by one or two atoms,
-
by contraction or expansion of two rings each by one atom,
-
by contraction of one ring by one atom and expansion of one ring by one atom,
-
by substitution of one or two carbon atoms of the cyclopenta[a]hydrophenanthrene skeleton, which are not shared by rings, by hetero atoms, in combination with the above defined contraction or expansion or not, or
-
by condensation with carbocyclic or heterocyclic rings in combination with one or more of the foregoing alterations or not. [4]
(2)
In this subclass, it is desirable to add the indexing codes of subclass C 07 M. The indexing codes should be unlinked. [6]
Normal steroids, i.e. cyclopenta[a]hydrophenanthrenes, containing carbon, hydrogen, halogen, or oxygen [2]
1
/
00
Normal steroids containing carbon, hydrogen, halogen, or oxygen, not substituted in position 17 beta by a carbon atom, e.g. estrane, androstane [2]
3
/
00
Normal steroids containing carbon, hydrogen, halogen, or oxygen, substituted in position 17 beta by one carbon atom [2]
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 [2]
7
/
00
Normal steroids containing carbon, hydrogen, halogen, or oxygen, substituted in position 17 beta by a chain of two carbon atoms (C 07 J 5/00 takes precedence) [2]
9
/
00
Normal steroids containing carbon, hydrogen, halogen, or oxygen, substituted in position 17 beta by a chain of more than two carbon atoms, e.g. cholane, cholestane, coprostane [2]
11
/
00
Normal steroids containing carbon, hydrogen, halogen, or oxygen, not substituted in position 3 [2]
13
/
00
Normal steroids containing carbon, hydrogen, halogen, or oxygen, having a carbon-to-carbon double bond from or to position 17 [2]
15
/
00
Stereochemically pure steroids containing carbon, hydrogen, halogen, or oxygen, having a partially or totally inverted skeleton, e.g. retrosteroids, L-isomers [2]
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 C 07 J 19/00) [2]
19
/
00
Normal steroids containing carbon, hydrogen, halogen, or oxygen, substituted in position 17 by a lactone ring [2]
21
/
00
Normal steroids containing carbon, hydrogen, halogen, or oxygen, having an oxygen-containing hetero ring spiro-condensed with the cyclopenta[a]hydrophenanthrene skeleton [2]
Normal steroids, i.e. cyclopenta[a]hydrophenanthrenes, containing sulfur [2]
31
/
00
Normal steroids containing one or more sulfur atoms not belonging to a hetero ring [2]
33
/
00
Normal steroids having a sulfur-containing hetero ring spiro-condensed or not condensed with the cyclopenta[a]hydrophenanthrene skeleton [2]
Normal steroids, i.e. cyclopenta[a]hydrophenanthrenes, containing nitrogen [2]
41
/
00
Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring [2]
43
/
00
Normal steroids having a nitrogen-containing hetero ring spiro-condensed or not condensed with the cyclopenta[a]hydrophenanthrene skeleton [2]
51
/
00
Normal steroids with unmodified cyclopenta[a]hydrophenanthrene skeleton not provided for in groups C 07 J 1/00 to C 07 J 43/00 [2]
53
/
00
Steroids in which the cyclopenta[a]hydrophenanthrene skeleton has been modified by condensation with carbocyclic rings or by formation of an additional ring by means of a direct link between two ring carbon atoms [2]
Nor- or homosteroids [2]
61
/
00
Steroids in which the cyclopenta[a]hydrophenanthrene skeleton has been modified by contraction of only one ring by one or two atoms [2]
63
/
00
Steroids in which the cyclopenta[a]hydrophenanthrene skeleton has been modified by expansion of only one ring by one or two atoms [2]
65
/
00
Steroids in which the cyclopenta[a]hydrophenanthrene skeleton has been modified by contraction of two rings, each by one atom [2]
67
/
00
Steroids in which the cyclopenta[a]hydrophenanthrene skeleton has been modified by expansion of two rings, each by one atom [2]
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 [2]
71
/
00
Steroids in which the cyclopenta[a]hydrophenanthrene skeleton is condensed with a heterocyclic ring (spiro-condensed heterocyclic rings C 07 J 21/00, C 07 J 33/00, C 07 J 43/00) [2]
73
/
00
Steroids in which the cyclopenta[a]hydrophenanthrene skeleton has been modified by substitution of one or two carbon atoms by hetero atoms [2]
75
/
00
Processes for the preparation of steroids, in general [4]
