substituted alkynyl cycloalkyl substituted cycloalkyl aryl substituted aryl heteroaryl substituted heteroaryl heterocyclic and substituted heterocyclic are as defined herein u201c alkenyl u201d refers to alkenyl group preferably having from 2 to 10 carbon atoms and more preferably 2 to 6 carbon atoms and having at least 1 and preferably from 1 2 sites of alkenyl unsaturation u201c alkoxy u201d refers to the group u201c alkyl o u2014 u201d which includes by way of example methoxy ethoxy n propoxy iso propoxy n butoxy tert butoxy sec butoxy n pentoxy n hexoxy 1 2 dimethylbutoxy and the like u201c alkyl u201d refers to linear or branched alkyl groups having from 1 to 10 carbon atoms alternatively 1 to 6 carbon atoms this term is exemplified by groups such as methyl t butyl n heptyl octyl and the like u201c aryl u201d or u201c ar u201d refers to an unsaturated aromatic carbocyclic group of from 6 to 14 carbon atoms having a single ring e g phenyl or multiple condensed rings e g naphthyl or anthryl which condensed rings may or may not be aromatic e g 2 benzoxazolinone 2h 1 4 benzoxazin 3 4h one and the like provided that the point of attachment is through an aromatic ring atom u201c substituted aryl u201d refers to aryl groups which are substituted with.