US PATENT SUBCLASS 544 / 150
.~.~.~.~.~.~.~.~ The additional six-membered hetero ring is one of the cyclos in a polycyclo ring system


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

Internet Version by PATENTEC © 1999      Terms of Use



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}
147  DF  .~.~.~.~.~.~ Additional oxygen containing hetero ring {3}
149  DF  .~.~.~.~.~.~.~ The additional hetero ring is six-membered {1}
150.~.~.~.~.~.~.~.~ The additional six-membered hetero ring is one of the cyclos in a polycyclo ring system {1}
151  DF  .~.~.~.~.~.~.~>.~.~ The additional six-membered hetero ring is one of the cyclos in a bicyclo ring system


DEFINITION

Classification: 544/150

(under subclass 149) Compounds in which the additional hetero ring is a cyclo in a polycyclo ring system.