US PATENT SUBCLASS 548 / 249
.~.~.~.~.~ 4-position substituent contains plural chalcogens, attached indirectly to the oxazole ring by nonionic bonding, none of which is bonded directly to phenyl

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}
240  DF  .~.~.~ 1,2-oxazoles (including hydrogenated) {4}
247  DF  .~.~.~.~ Plural double bonds between ring members of the oxazole ring {2}
249.~.~.~.~.~ 4-position substituent contains plural chalcogens, attached indirectly to the oxazole ring by nonionic bonding, none of which is bonded directly to phenyl

DEFINITION

Classification: 548/249

(under subclass 247) Compounds wherein the substituent attached to the 4-position of the oxazole ring contains at least two chalcogens (i.e., oxygen, sulfur, selenium, or tellurium), each of which is attached indirectly to the oxazole ring by nonionic bonding and not one of which is bonded directly to a phenyl ring.

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