US PATENT SUBCLASS 544 / 117
.~.~.~.~.~.~.~.~.~.~ Three or more ring hetero atoms in the bicyclo ring system

Current as of: June, 1999
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544 /   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 having two or more ring hetero atoms of which at least one is nitrogen (e.g., selenazines, etc.) {6}
63  DF  .~.~.~ Six-membered hetero ring consists of oxygen, nitrogen and carbon (e.g., 1,2-oxazines, etc) {8}
98  DF  .~.~.~.~ 1,4-Oxazines {2}
106  DF  .~.~.~.~.~ Morpholines (i.e., fully hydrogenated 1,4-oxazines {10}
111  DF  .~.~.~.~.~.~ Additional nitrogen containing hetero ring (e.g., thiazetidine, etc.) {5}
114  DF  .~.~.~.~.~.~.~ Diazine ring {3}
115  DF  .~.~.~.~.~.~.~.~ The diazine ring is one of the cyclos in a polycyclo ring system {1}
116  DF  .~.~.~.~.~.~.~.~.~ The diazine ring is one of the cyclos in a bicyclo ring system {2}
117.~.~.~.~.~.~.~.~.~.~ Three or more ring hetero atoms in the bicyclo ring system {1}
118  DF  .~.~.~.~.~.~.~>.~.~.~.~ Four or more ring nitrogens in the bicyclo ring system

DEFINITION

Classification: 544/117

(under subclass 116) Compounds wherein the bicyclo ring system contains at least one ring hetero atom in addition to the two ring nitrogens of the additional six-membered hetero ring.

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