not hydrogenated in the hetero ring

Full Title

Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings > ortho- or peri-condensed with carbocyclic rings or ring systems > Benzo [b] pyrans, not hydrogenated in the carbocyclic ring > with oxygen or sulfur atoms directly attached in position 2 > not hydrogenated in the hetero ring

Classification Context

Section:

CHEMISTRY; METALLURGY

Class:

ORGANIC CHEMISTRY

Subclass:

HETEROCYCLIC COMPOUNDS

Child Classifications

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• C07D 311/1 unsubstituted
• C07D 311/12 substituted in position 3 and unsubstituted in position 7
• C07D 311/14 substituted in position 6 and unsubstituted in position 7
• C07D 311/16 substituted in position 7
• C07D 311/18 substituted otherwise than in position 3 or 7