having five-membered rings with two or more ring hetero atoms, at least one of which is nitrogen, e.g. triazoles [2]
31
/
415
•
•
•
•
Diazoles; Derivatives thereof, e.g. biotin [2]
31
/
42
•
•
•
•
Oxazoles [2]
31
/
425
•
•
•
•
Thiazoles [2]
31
/
43
•
•
•
•
•
Compounds containing 4-thia-1-azabicyclo [3.2.0] heptane ring systems, i.e. compounds containing a ring system of the formula , e.g. penicillins, penems [2,6]
31
/
435
•
•
•
having six-membered rings with one nitrogen as the only ring hetero atom [2]
31
/
44
•
•
•
•
Pyridine; Derivatives thereof, e.g. vitamin B6 [2]
31
/
445
•
•
•
•
•
Piperidine; Derivatives thereof [2]
31
/
45
•
•
•
•
•
•
Cycloheximides [2]
31
/
455
•
•
•
•
•
Nicotinic acids, e.g. niacin; Derivatives thereof [2]
31
/
46
•
•
•
•
•
8-Aza-bicyclo (3,2,1) octane; Derivatives thereof, e.g. atropine, cocaine [2]
31
/
465
•
•
•
•
•
Nicotine; Derivatives thereof [2]
31
/
47
•
•
•
•
Quinolines; Isoquinolines [2]
31
/
475
•
•
•
•
•
having an indole ring, e.g. alkaloids such as rauwolfia, yohimbine, reserpine, strychnine [2]
31
/
48
•
•
•
•
•
Ergot alkaloids, e.g. of the cyclic peptide type [2]
31
/
485
•
•
•
•
•
Opium alkaloids, e.g. morphine, papaverine, codeine [2]
31
/
49
•
•
•
•
•
Cinchona alkaloids, e.g. quinine [2]
31
/
495
•
•
•
having six-membered rings with two nitrogen atoms as the only ring hetero atoms (A 61 K 31/48 takes precedence) [2]
, e.g. penicillins, penems [2,6]