It refers to a formula compound (I-A) or (I-B), wherein: R1 is a hydrogen or C1-C5 tar; R2 is a hydrogen, C1-C4 tar, etc.; R3 is a hydrogen, halogen, etc. He also mentioned his preparation process These compounds are substitutes for the treatment of acute and recurrent bleeding in patients with inherited or acquired blood disorders or in patients without inherited blood disorders.Se refiere a un compuesto de formula (I-A) o (I-B), donde: R1 es hidrogeno o alquilo C1-C5; R2 es hidrogeno, alquilo C1-C4, entre otros; R3 es hidrogeno, halogeno, entre otros. Tambien se refiere a un procedimiento para su preparacion. Dichos compuestos son piperidinilpirazolopirimidinonas sustituidas utiles en el tratamiento de sangrado agudo y recurrente en pacientes con o sin trastornos hemostaticos hereditarios o adquiridos