US PATENT SUBCLASS 548 / 248
.~.~.~.~.~ Having -C(=X)-, wherein X is chalcogen, bonded directly to ring carbon of the oxazole ring by nonionic bonding

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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}
240  DF  .~.~.~ 1,2-oxazoles (including hydrogenated) {4}
247  DF  .~.~.~.~ Plural double bonds between ring members of the oxazole ring {2}
248.~.~.~.~.~ Having -C(=X)-, wherein X is chalcogen, bonded directly to ring carbon of the oxazole ring by nonionic bonding

DEFINITION

Classification: 548/248

(under subclass 247) Compounds wherein a group, in which X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), is bonded directly to a ring carbon of the oxazole ring and additionally directly to a chalcogen or nitrogen atom.

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