(0)C07D:25/33:

(0)C07D:25/33:

IPC6

SECTION C - CHEMISTRY; METALLURGY

HETEROCYCLIC COMPOUNDS

C07D

26/34

C07D413/00 - C07D451/00

413

/

00

Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms [2]

containing two hetero rings [2]

directly linked by a ring-member-to-ring- member bond [2]

linked by a carbon chain containing only aliphatic carbon atoms [2]

linked by a carbon chain containing alicyclic rings [2]

linked by a carbon chain containing aromatic rings [2]

linked by a chain containing hetero atoms as chain links [2]

containing three or more hetero rings [2]

415

Heterocyclic compounds containing the thiamine skeleton [2]

417

Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C 07 D 415/00 [2]

containing two hetero rings [2]

directly linked by a ring-member-to-ring- member bond [2]

linked by a carbon chain containing only aliphatic carbon atoms [2]

linked by a carbon chain containing alicyclic rings [2]

linked by a carbon chain containing aromatic rings [2]

linked by a chain containing hetero atoms as chain links [2]

containing three or more hetero rings [2]

419

Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen, oxygen, and sulfur atoms as the only ring hetero atoms [2]

containing two hetero rings [2]

directly linked by a ring-member-to-ring- member bond [2]

linked by a carbon chain containing only aliphatic carbon atoms [2]

linked by a carbon chain containing alicyclic rings [2]

linked by a carbon chain containing aromatic rings [2]

linked by a chain containing hetero atoms as chain links [2]

containing three or more hetero rings [2]

421

Heterocyclic compounds containing two or more hetero rings, at least one ring having selenium, tellurium, or halogen atoms as ring hetero atoms [2]

containing two hetero rings [2]

directly linked by a ring-member-to-ring- member bond [2]

linked by a carbon chain containing only aliphatic carbon atoms [2]

linked by a carbon chain containing alicyclic rings [2]

linked by a carbon chain containing aromatic rings [2]

linked by a chain containing hetero atoms as chain links [2]

containing three or more hetero rings [2]

Heterocyclic compounds containing condensed hetero ring systems [2]

Notes

(1)	Groups C 07 D 451/00 to C 07 D 517/00 cover compounds containing one system of two or more relevant hetero rings condensed among themselves or condensed with a common carbocyclic ring system, with or without other non-condensed hetero rings. [2]

(2)	For the purpose of classification in groups C 07 D 451/00 to C 07 D 519/00, the degree of hydrogenation of the ring system is not taken into consideration. [2]

(3)

For the purpose of classification in groups C 07 D 451/00 to C 07 D 463/00, C 07 D 473/00 to C 07 D 477/00, C 07 D 489/00, C 07 D 499/00 to C 07 D 507/00, the wording of the groups has to be understood, in the absence of an indication to the contrary, as including ring systems further condensed with carbocyclic rings or ring systems, but excluding ring systems further condensed with other hetero rings, either directly or through a common carbocyclic ring system, e.g. sparteine

is classified in group C 07 D 471/22, not in group C 07 D 455/02. [3,5]

(4)	In groups C 07 D 471/00, C 07 D 487/00, C 07 D 491/00 to C 07 D 498/00 or C 07 D 513/00 to C 07 D 517/00, the subdivision is based on the number of relevant hetero rings. [3]

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