US PATENT SUBCLASS 544 / 49
.~.~.~.~.~.~ Benzothiazines (including hydrogenated)

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}
47  DF  .~.~.~.~.~ Bicyclo ring system having the six-membered hetero ring as one of the cyclos {2}
49.~.~.~.~.~.~ Benzothiazines (including hydrogenated) {2}
50  DF  .~.~.~.~.~.~.~> 1,3- or 3,1-benzothiazines
51  DF  .~.~.~.~.~.~.~> 1,4-benzothiazines {1}

DEFINITION

Classification: 544/49

(under subclass 47) Compounds wherein the bicyclo ring system consists of a benzene ring sharing two adjacent carbons of the six-membered hetero ring.

(1) Note. The following shows the position numbering used for benzothiazines: It is pointed out that the two carbons common to both rings are not numbered. The nitrogen and sulfur may be in any of positions 1, 2, 3, and 4. [figure]

(2) Note. Examples of compounds provided for herein are: [figure] [caption]and [figure]