US PATENT SUBCLASS 540 / 587
.~.~.~.~.~ The hetero ring shares ring members with each of two benzene rings in the tricyclo ring system (e.g., morphanthridines, etc.)

Current as of: June, 1999
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540 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
1  DF  .~ HETEROCYCLIC CARBON COMPOUNDS CONTAINING A HETERO RING HAVING CHALCOGEN (I.E., OXYGEN, SULFUR, SELENIUM OR TELLURIUM) OR NITROGEN AS THE ONLY RING HETERO ATOMS {6}
484  DF  .~.~ The hetero ring contains seven members including nitrogen and carbon {14}
576  DF  .~.~.~ Polycyclo ring system which contains the hetero ring as one of the cyclos {4}
586  DF  .~.~.~.~ Tricyclo ring system which contains the hetero ring as one of the cyclos {1}
587.~.~.~.~.~ The hetero ring shares ring members with each of two benzene rings in the tricyclo ring system (e.g., morphanthridines, etc.) {1}
588  DF  .~.~.~.~.~.~> The nitrogen of the hetero ring is bonded directly to each of the two benzene rings (e.g., iminodibenzyl, etc.) {4}

DEFINITION

Classification: 540/587

(under subclass 586) Compounds wherein the hetero ring shares ring members with each of two benzene rings in the tricyclo ring system.

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