US PATENT SUBCLASS 546 / 99
.~.~.~.~.~.~ Nitrogen, other than as nitro or nitroso, attached directly or indirectly to the tricyclo ring system by nonionic bonding

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}
98  DF  .~.~.~.~.~ Ring carbon is shared by each of the three cyclos (e.g., 1,8 naphthalimides, etc.) {1}
99.~.~.~.~.~.~ Nitrogen, other than as nitro or nitroso, attached directly or indirectly to the tricyclo ring system by nonionic bonding {1}
100  DF  .~.~.~.~.~.~.~> The nitrogen is bonded directly to a carbocyclic ring of the tricyclo ring system

DEFINITION

Classification: 546/99

Nitrogen, other than as nitro or nitroso, attached directly or indirectly to the tricyclo ring system by nonionic bonding:

(under subclass 98) Compojnds wherein nitrogen, except as a member of the nitro (-NO2) or nitro-so (-NO) group, is attached directly or indirectly to the tricyclo ring system by nonionic bonding.

(1) Note. Examples of compounds provided for herein are: [figure] [figure]