US PATENT SUBCLASS 548 / 146
.~.~.~ 1,3-thiazoles (including hydrogenated)

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}
146.~.~.~ 1,3-thiazoles (including hydrogenated) {7}
147  DF  .~.~.~.~> Spiro
148  DF  .~.~.~.~> Polycyclo ring system having the thiazole ring as one of the cyclos {3}
181  DF  .~.~.~.~> Polycyclo heterocyclic ring system containing ring nitrogen
182  DF  .~.~.~.~> Chalcogen bonded directly to ring carbon of the thiazole ring {4}
190  DF  .~.~.~.~> Nitrogen attached directly to the thiazole ring by nonionic bonding {4}
200  DF  .~.~.~.~> Having -C(=X)-, wherein X is chalcogen, bonded directly to the thiazole ring {1}
202  DF  .~.~.~.~> Plural double bonds between ring members of thiazole ring {1}

DEFINITION

Classification: 548/146

(under subclass 100) Compounds in which the five-membered hetero ring has sulfur in the 1-position, nitrogen in the 3-position, and carbons in the remaining three positions.

(1) Note. This subclass provides for compounds containing the following ring which may have a double bond between its members: [figure]