containing at least two hetero rings condensed among themselves or condensed with a common carbocyclic ring system, e.g. rifamycin

Full Title

Preparation of heterocyclic carbon compounds with only O, N, S, Se, or Te as ring hetero atoms > containing at least two hetero rings condensed among themselves or condensed with a common carbocyclic ring system, e.g. rifamycin

Classification Context

Section:

CHEMISTRY; METALLURGY

Class:

BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING

Subclass:

FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE