US PATENT SUBCLASS 548 / 232
.~.~.~.~.~.~ 4- or 5-position substituent contains chalcogen

Current as of: June, 1999
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548 /   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) {4}
100  DF  .~.~ Hetero ring is five-membered having two or more ring hetero atoms of which at least one is nitrogen (e.g., selenazoles, etc.) {18}
215  DF  .~.~.~ 1,3-oxazoles (including hydrogenated) {6}
225  DF  .~.~.~.~ Chalcogen bonded directly to ring carbon of the oxazole ring {3}
229  DF  .~.~.~.~.~ Chalcogen bonded directly at 2-position of the oxazole ring {3}
232.~.~.~.~.~.~ 4- or 5-position substituent contains chalcogen

DEFINITION

Classification: 548/232

(under subclass 229) Compounds wherein the substituent on the 4- or 5-position of the oxazole ring contains chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).

(1) Note. Examples of compounds provided for herein are: [figure] [figure]