This refers to estrigolactamas Derivatives, process and Intermediates for their preparation, compositions of Plant Growth Regulators containing same and Methods of use to control the growth of plants and / or promote germination of Seeds.Claim 1: a compound of formula (1): where W is o or s； R2 and R3 are independently Hydrogen or c1-3 alkyl； R4 and R5 are independently Hydrogen, halogen, Nitro, cyano, c1-3 alkyl, alkoxy haloalquilo c1-3, c1-3, hydroxyl, OC (OR - R9), Amine, N - alkyl - or 3amina C1 n, n-di - alkyd Il C1 - 3amina； R9 is Hydrogen, alkyl alkoxy C1 C1 - 6 - 6Haloalquilo C1 - 6； R6 and R7 are independently Hydrogen, c1-3 alkyl, hydroxyl or alkoxy c1-3； R8 is Hydrogen, alkyl, Nitro, cyano, or haloalquilo C1 C1 - 6 - 6； r1 is Hydrogen, C1 6 - alkoxy, amino, hydroxyl, alkyl 6amina C1 - N -, N, di - n - alkyl - 6amina C1, C1 - 6 alkyl substituted or unsubstituted One C INCO R10, alkyl alkoxy carbonyl - 8 C1, C1 - 8 carbonyl, aryl, aryl substituted by one to five R10Heteroaryl heteroaryl substituted by one to five, R10, heterociclilo, replaced by one to five heterociclilo R10, Benzyl or substituted benzyl by one to five R10, R10 is Hydrogen, cyano, Nitro alkyl, halogen, alkoxy C1 C1 - 6, - 6, - 6 alquenilo haloalquilo C1, C2 or C2 - 6 - 6 alquinilo A1, A2,. 3 - X C and A4 are independently or nitrogenWhere each x can be same or different, and provided that no more than two of A1, A2, A3 and A4 are nitrogen； and X is Hydrogen, halogen, cyano, hidroxialquilo c1-3, OC (R9), alkoxy alkyl C1 C1 - 6, - 6, - 6 haloalquilo C1, Nitro, amino alkyl amine C1 - 6 - n, N, N - alkyl Amine or 6 C1 - NHC (R9)； or your SA Or N - oxides.La presente se refiere a derivados de estrigolactamas, los procesos e intermediarios para su preparación, las composiciones reguladoras del crecimiento de plantas que los comprenden y sus métodos de uso para controlar el crecimiento de plantas y/o promover la germinación de semillas.Reivindicación 1: Un compuesto de fórmula (1) donde: W es O ó
