| http://www.w3.org/ns/prov#value | - D may particularly contain an O or N atom, or a ???C(CN)2 positioned in conjugation with the X and Y groups in Formula II or in conjugation with the carbonyl oxygen of the benzothiazine ring in Formula III. By being positioned in ???conjugation??? with the carbonyl oxygen, it is meant that there is a conjugated system between the oxygen and the atom in D. Such systems are generally known in organi
|
