US PATENT SUBCLASS 548 / 576
.~.~.~.~.~.~ The substituent on the ring nitrogen of the five-membered hetero ring contains a bicyclo carbocyclic ring system

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548 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
*  DD  .~ HETEROCYCLIC CARBON COMPOUNDS CONTAINING A HETERO RING HAVING CHALCOGEN (I.E., OXYGEN, SULFUR, SELENIUM, OR TELLURIUM) OR NITROGEN AS THE ONLY RING HETERO ATOMS (Class 540, subclass 1) {4}
400  DF  .~.~ Hetero ring is five-membered consisting of one nitrogen and four carbons (e.g., halopyrrolidines, etc.) {20}
570  DF  .~.~.~ Chalcogen attached indirectly to the five-membered hetero ring by acyclic nonionic bonding {2}
574  DF  .~.~.~.~ The chalcogen is in a substituent attached to the ring nitrogen of the five membered hetero ring {1}
575  DF  .~.~.~.~.~ Carbocyclic ring bonded directly to the chalcogen {1}
576.~.~.~.~.~.~ The substituent on the ring nitrogen of the five-membered hetero ring contains a bicyclo carbocyclic ring system

DEFINITION

Classification: 548/576

(under subclass 575) Compounds wherein a bicyclo carbocyclic ring system is parto of the substituent on the ring nitrogen of the five-membered hetero ring.