US PATENT SUBCLASS 546 / 113
.~.~.~.~.~ Plural ring hetero atoms in the bicyclo ring system

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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}
112  DF  .~.~.~.~ Bicyclo ring system having the six-membered hetero ring as one of the cyclos {7}
113.~.~.~.~.~ Plural ring hetero atoms in the bicyclo ring system {6}
114  DF  .~.~.~.~.~.~> Ring sulfur in the bicyclo ring system
115  DF  .~.~.~.~.~.~> Ring oxygen in the bicyclo ring system {1}
117  DF  .~.~.~.~.~.~> At least four ring nitrogens in the bicyclo ring system
118  DF  .~.~.~.~.~.~> Three ring nitrogens in the bicyclo ring system {1}
121  DF  .~.~.~.~.~.~> Ring nitrogen is shared by the two cyclos
122  DF  .~.~.~.~.~.~> The other cyclo in the bicyclo ring system is also six-membered (e.g., naphthyridines, etc.) {1}

DEFINITION

Classification: 546/113

Plural ring hetero atoms in the bicyclo ring system:

(under subclass 112) Compounds wherein the bicyclo ring system includes at least one ring hetero atom in addition to the ring nitrogen of the six-membered hetero ring.

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