US PATENT SUBCLASS 546 / 97
.~.~.~.~.~ Two of the cyclos share at least three ring carbons (e.g., benzomorphans, etc.)

Current as of: June, 1999
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546 /   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) {1}
1  DF  .~.~ Hetero ring is six-membered consisting of one nitrogen and five carbons {24}
26  DF  .~.~.~ Polycyclo ring system having the six-membered hetero ring as one of the cyclos {9}
79  DF  .~.~.~.~ Tricyclo ring system having the six-membered hetero ring as one of the cyclos {7}
97.~.~.~.~.~ Two of the cyclos share at least three ring carbons (e.g., benzomorphans, etc.)

DEFINITION

Classification: 546/97

Two of the cyclos share at least three ring carbons (e.g., benzomorphans, etc.):

(under subclass 79) Compounds wherein at least three ring carbons of one cyclo are ring carbons of an additional cyclo in the tricyclo ring system (i.e., bridged).

(1) Note. An example of a compound provided for herein is: [figure]