The present invention provides an agent for the prophylaxis or treatment of autoimmune diseases (e.g., psoriasis, rheumatoid arthritis, inflammatory bowel disease, Sjogren's syndrome, Behcet's disease, multiple sclerosis, systemic lupus erythematosus etc.) and the like, which has a superior Tyk2 inhibitory action.
The present invention relates to a compound represented by the formula
wherein each symbol is as defined in the specification, or a salt thereof.
The reactions of 2-amino-4,5-dihydro-3-furancarbonitriles 1a-d with α,β-unsaturated carbonyl compounds in the presence of sodium ethoxide (0.1 equivalent) gave the corresponding Michael adducts 2a-d, 3a-d and 4a-d. Compounds 2a-d and 3a-c reacted with sodium alkoxide (1 equivalent) to yield the corresponding 7a-alkoxyhexahydrofuro[2,3-b]pyridines 5a-d, 6a-d, 7a-c and 8a-c. Treatment of 5a-d, 6a-d,
2-氨基-4,5-二氢-3-呋喃腈1a-d与α,β-不饱和羰基化合物在乙醇钠(0.1当量)存在下的反应得到相应的迈克尔加合物2a-d,3a-d和4a-d。化合物2a-d和3a-c与醇钠(1当量)反应,得到相应的7a-烷氧基六氢呋喃[2,3- b ]吡啶5a-d,6a-d,7a-c和8a-c。用叔丁醇钾处理5a-d,6a-d,7a-c和8a-c产生相应的二氢呋喃并[2,3- b ]吡啶图9a-d和10a-c。4a-c与乙醇钠(1当量)反应,得到相应的二氢呋喃[2,3- b ]吡啶11a-c。
Synthesis of 1-acyl-2-oxo-3-pyrrolidinecarbonitriles by the reaction of 2-acylamino-4,5-dihydro-3-furancarbonitriles with sodium iodide
The reaction of 2-acylamino-4,5-dihydro-3-furancarbonitriles 1 with sodiumiodide in N,N-dimethyl-formamide gave the corresponding 1-acyl-2-oxo-3-pyrrolidinecarbonitriles 2 in good yields. Successive treatment of 1 with titanium(IV) chloride and potassium carbonate resulted in the formation of N-acyl-1-cyanocyclopropanecarboxamides 4. The same compounds 2 were also obtained by treatment of 4 with sodium
The present invention provides an agent for the prophylaxis or treatment of autoimmune diseases (e.g., psoriasis, rheumatoid arthritis, inflammatory bowel disease, Sjogren's syndrome, Behcet's disease, multiple sclerosis, systemic lupus erythematosus etc.) and the like, which has a superior Tyk2 inhibitory action.
The present invention relates to a compound represented by the formula
wherein each symbol is as defined in the specification, or a salt thereof.