Preparation of heterocyclic carbon compounds with only O, N, S, Se or Te as ring hetero atoms

Industry

  • CPC
  • C12P17/00
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Sub Industries

C12P17/02Oxygen as only ring hetero atom C12P17/04containing a five-membered hetero ring C12P17/06containing a six-membered hetero ring C12P17/08containing a hetero ring of at least seven ring members C12P17/10Nitrogen as only ring hetero atom C12P17/12containing a six-membered hetero ring C12P17/14Nitrogen or oxygen as hetero atom and at least one other diverse hetero ring atom in the same ring C12P17/16containing two or more hetero rings C12P17/162Heterorings having oxygen atoms as the only ring heteroatoms C12P17/165Heterorings having nitrogen atoms as the only ring heteroatoms C12P17/167Heterorings having sulfur atoms as ring heteroatoms C12P17/18containing at least two hetero rings condensed among themselves or condensed with a common carbocyclic ring system C12P17/181Heterocyclic compounds containing oxygen atoms as the only ring heteroatoms in the condensed system C12P17/182Heterocyclic compounds containing nitrogen atoms as the only ring heteroatoms in the condensed system C12P17/183containing an indolo[4,3-F,G]quinoleine nucleus C12P17/184containing a beta-lactam ring C12P17/185Heterocyclic compounds containing sulfur atoms as ring hetero atoms in the condensed system C12P17/186containing a 2-oxo-thieno[3,4-d]imidazol nucleus C12P17/187containing two or more directly linked sulfur atoms C12P17/188Heterocyclic compound containing in the condensed system at least one hetero ring having nitrogen atoms and oxygen atoms as the only ring heteroatoms C12P17/189containing the rifamycin nucleus