This disclosure describes compositions of matter useful as anxiolytic agents and the method of meliorating anxiety in mammals therewith; the active ingredients of said compositions of matter being certain substituted 6-phenyl-1,2,4-triazolo[4,3-b]pyridazines or the pharmacologically acceptable acid-addition salts thereof.
An efficient Ni–(S,S)-Ph-BPE complex that catalyzed asymmetrichydrogenation of cyclic N-acyl hydrazones has been developed to produce various chiral cyclic hydrazines in high yields with excellent enantioselectivities of up to >99% enantiomeric excess. Moreover, the hydrogenation can not only proceed smoothly on a gram scale under lower catalyst loading (S/C = 3000) without any decrease of enantioselectivity
已开发出一种高效的 Ni-( S , S )-Ph-BPE 络合物,可催化环状N-酰基腙的不对称氢化,以高产率生产各种手性环状肼,具有高达 >99% 对映体过量的出色对映选择性。此外,氢化不仅可以在较低的催化剂负载量(S/C = 3000)下顺利进行,而且对映选择性没有任何降低,而且还可以应用于 RIP-1 激酶抑制剂的不对称合成。