US PATENT SUBCLASS 544 / 33
.~.~.~.~.~.~ 1,2- or 2,1-Thiazine ring in the tricyclo ring system (e.g., hydrogenated 1,2-benzothiazine in tricyclo ring system, etc.)

Current as of: June, 1999
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544 /   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) {1}
1  DF  .~.~ Hetero ring is six-membered having two or more ring hetero atoms of which at least one is nitrogen (e.g., selenazines, etc.) {6}
3  DF  .~.~.~ Six-membered hetero ring consists of oxygen, sulfur, nitrogen and carbon (e.g., oxathiazines, etc.) {7}
14  DF  .~.~.~.~ Polycyclo ring system having the six-membered hetero ring as one of the cyclos {3}
32  DF  .~.~.~.~.~ Tricyclo ring system having the six-membered hetero ring as one of the cyclos {3}
33.~.~.~.~.~.~ 1,2- or 2,1-Thiazine ring in the tricyclo ring system (e.g., hydrogenated 1,2-benzothiazine in tricyclo ring system, etc.)

DEFINITION

Classification: 544/33

(under subclass 32) Compounds in which the ring sulfur and ring nitrogen of the six-membered hetero ring are in adjacent positions.

(1) Note. This subclass provides for compounds such as: [figure] [figure] [figure]