US PATENT SUBCLASS 546 / 47
.~.~.~.~.~ Plural ring hetero atoms in the pentacyclo ring system

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
47.~.~.~.~.~ Plural ring hetero atoms in the pentacyclo ring system {2}
48  DF  .~.~.~.~.~.~> Three or more ring hetero atoms in the pentacyclo ring system
49  DF  .~.~.~.~.~.~> Two ring nitrogens in the pentacyclo ring system (e.g., quinacridones, etc.) {2}

DEFINITION

Classification: 546/47

Plural ring hetero atoms in the pentacyclo ring system:

(under subclass 42) Compounds wherein the pentacyclo ring system contains 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]