A compound of general formula (1a) ** (See formula) ** wherein A designates a group, optionally substituted with one or more identical or different R1, selected from C3-10 cycloalkyl, 3-8 membered heterocycloalkyl, aryl C6-15 and 5-12 membered heteroaryl； R1 and R2, each independently of the other, designate hydrogen or a group selected from Ra, Rb and Ra substituted with one or more identical or different Rc and / or Rb； R3 designates a group selected from hydrogen, halogen, -ORc, -OCF3, -SRc, -NRcRc, -CF3, -CN, -OCN, - SCN, -NO, -NO2, C1-3 alkyl, C1-3 haloalkyl and C1-3 haloalkyloxy； W and Y, independently of each other, represent CH2, O, N-Re or N-ORe； each of Ra is selected, independently from each other, from C1-6 alkyl, C3-10 cycloalkyl, C4-16 cycloalkyl, C6-10 aryl, C7-16 aryl-alkyl, 2-6 membered heteroalkyl, 3-8-membered heterocycloalkyl, 4-14-membered heterocycloalkylalkyl, 5-12-membered heteroaryl and 6-18-membered heteroarylalkyl； each of Rb is a suitable group and is independently selected from>； = O, -ORc, C1-3 haloalkyloxy, - OCF3,>； = S, -SRc,>； = NRc,>； = NORc,>； = NNRcRc,>； = NN (Rg) C (O) NRcRc, -NRcRc, -ONRcRc, -N (ORc) Rc, -N (Rg) NRcRc, halogen, -CF3, -CN, -NC, -OCN, -SCN, -NO, -NO2,>； = N2, -N3, -S (O) Rc, -S (O) ORc, -S (O) 2Rc, -S (O) 2ORc, -S (O) NRcRc, -S (O) 2NRcRc, -OS (O) Rc, -OS (O) 2Rc, -OS (O) 2ORc, -OS (O) NRcRc, -OS (O) 2NRcRc, -C (O) Rc, -C (O) ORc , -C (O) SRc, - C (O) NRcRc, -C (O) N (Rg) NRcRc, -C (O) N (Rg) ORc, -C (NRg) NRcRc, -C (NOH) Rc , -C (NOH) NRcRc, -OC (O) Rc, -OC (O) ORc, -OC (O) SRc, -OC (O) NRcRc, -OC (NRg) NRcRc, -SC (O) Rc, -SC (O) ORc, -SC (O) NRcRc, -SC (NRg) NRcRc, -N (Rg) C (O) Rc, - N [C (O) Rc] 2, -N (0Rg) C ( O) Rc, -N (Rg) C (NRg) Rc, -N (Rg) N (Rg) C (O) Rc, -N [C (O) Rc] NRcRc, -N (Rg) C (S) Rc, -N (Rg) S (O) Rc, - N (Rg) S (O) ORc, -N (Rg) S (O) 2Rc, -N [S (O) 2Rc] 2, -N (Rg ) S (O) 2ORc, -N (Rg) S (O) 2NRcRc, -N (Rg) [S (O) 2] 2Rc, -N (Rg) C (O) ORc, - N (Rg) C ( O) SRc, -N (Rg) C (O) NRc
