On April 26, 2012, Badiger, Sangamesh; Behnke, Dirk; Betschart, Claudia; Cotesta, Simona; Hintermann, Samuel; Ofner, Silvio; Pandit, Chetan; Roy, Bernard Lucien published a patent.Synthetic Route of 1198284-94-4 The title of the patent was Preparation of diazaspiro[5.5]undecanes as orexin receptor inhibitors. And the patent contained the following:
The title compounds I [A = (un)substituted 5-6 membered aromatic ring which contain 1-4 heteroatoms selected from N, O and S; m, n = 0-6; R1, R2 = halo alkyl, cycloalkyl, etc.; X1 = C(O) and X2 = N(LB); or X1 = N(LB) and X2 = C(O); L = C(R6)2; R6 = H, alkyl, cycloalkyl, etc.; or two R6 together with the carbon atom to which they are bound form cycloalkyl; B = (un)substituted 5-6 membered monocyclic or 8-10 membered fused bicyclic aromatic ring which may contain 1-4 heteroatoms selected from N, O and S], useful as orexin receptor inhibitors, were prepared E.g., a multi-step synthesis of II, starting from 2,9-diazaspiro[5.5]undecan-1-one trifluoroacetate and 2-chloro-4,6-dimethylpyrimidine, was described. Exemplified compounds I were tested for inhibiting human orexin 1 and human orexin 2 receptors (data given). Pharmaceutical composition comprising the compound I was disclosed. The experimental process involved the reaction of tert-Butyl 1-oxo-2,9-diazaspiro[5.5]undecane-9-carboxylate(cas: 1198284-94-4).Synthetic Route of 1198284-94-4
The Article related to diazaspiroundecane preparation orexin receptor inhibitor, Heterocyclic Compounds (More Than One Hetero Atom): Pyrimidines and Quinazolines and other aspects.Synthetic Route of 1198284-94-4
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