==Structure-1 (12(doc1))==
===[http://v3.espacenet.com/publicationDetails/claims?CC=DE&NR=4124942A1&KC=A1&FT=D&date=19930128&DB=EPODOC&locale=en_EP DE4124942]===
[[Image:a5a51.jpg|thumb|center|400px]][[Image:a6a61.jpg|thumb|center|400px]]
*X<sub>1</sub> = A-B-C- C(sp2 carbon), X<sub>2</sub> = F-C-D-C(sp2 carbon), X<sub>3</sub> = R<sub>1</sub>-N<nowiki><</nowiki>, X<sub>4</sub> = N, X<sub>5</sub> = R<sub>2</sub>-C(sp2 carbon)
#X<sub>1</sub>: A =H , B = bond, C = (b) under B which is halo substituted phenylene which completely matches with 4<sup>th</sup> position substituent of the generic compound