US PATENT SUBCLASS 546 / 59
.~.~.~.~.~.~ Nitrogen attached directly to the pentacyclo 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}
42  DF  .~.~.~.~ Pentacyclo ring system having the six-membered hetero ring as one of the cyclos {3}
58  DF  .~.~.~.~.~ The pentacyclo ring system consists of five six-membered cyclos (e.g., anthraquinonebenzacridones, etc.) {1}
59.~.~.~.~.~.~ Nitrogen attached directly to the pentacyclo ring system by nonionic bonding {1}
60  DF  .~.~.~.~.~.~.~> An additional ring is bonded directly to the nitrogen


DEFINITION

Classification: 546/59

Nitrogen attached directly to the pentacyclo ring system by nonionic bonding:

(under subclass 58) Compounds wherein nitrogen is attached directly to the pentacyclo ring system by nonionic bonding.

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