US PATENT SUBCLASS 548 / 219
.~.~.~.~.~ Plural polycyclo ring systems having the oxazole ring as one of the cyclos in each of the ring systems


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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}
217  DF  .~.~.~.~ Polycyclo ring system having the oxazole ring as one of the cyclos {6}
219.~.~.~.~.~ Plural polycyclo ring systems having the oxazole ring as one of the cyclos in each of the ring systems {1}
220  DF  .~.~.~.~.~.~> Plural oxazole-containing polycyclo ring systems each bonded directly to the same polycyclo ring system or the same hetero ring


DEFINITION

Classification: 548/219

(under subclass 217) Compounds which contain at least two of the oxazole-containing polycyclo ring systems.

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