申请人:John Wyeth & Brother Ltd.
公开号:US04593111A1
公开(公告)日:1986-06-03
The invention concerns novel compounds of formula IIIA R.sub.x.sup.a Si(NCS).sub.4-x IIIA wherein R.sup.a is selected from electron donating substituents consisting of alkoxy of 1-10 carbon atoms, cycloalkoxy of 4-8 carbon atoms, aralkoxy of 7-12 carbon atoms, phenoxy which may be substituted by alkyl of 1-10 carbon atoms, alkoxy of 1-10 carbon atoms or trifluoromethyl, the group R.sup.b R.sup.c N-wherein R.sup.b and R.sup.c are selected from alkyl of 1-6 carbon atoms, cycloalkyl of 4-6 carbon atoms, phenyl which may be substituted by alkyl of 1-10 carbon atoms, alkoxy of 1-10 carbon atoms or trifluoromethyl, and aralkyl of 7-12 carbon atoms or R.sup.b and R.sup.c may be joined to form a pyrrolidinyl or piperidinyl ring with the nitrogen atom, which ring may be substituted by alkyl of 1-10 carbon atoms; alkylthio of 1-10 carbon atoms, cycloalkylthio of 4-8 carbon atoms, aralkylthio of 7-12 carbon atoms, phenylthio which may be substituted by alkyl of 1-10 carbon atoms, alkoxy of 1-10 carbon atoms, or trifluoromethyl, and hydrocarbon substituents selected from alkyl of 1-10 carbon atoms, cycloalkyl of 4-8 carbon atoms, aralkyl of 7-12 carbon atoms, or phenyl which may be substituted by alkyl of 1-10 carbon atoms, alkoxy of 1-10 carbon atoms or trifluoromethyl, at least one group R.sup.a being an electron donating substituent with the provisos that: (i) when x is 3 and all three R.sup.a groups are the same alkoxy then the alkoxy group has at least 3 carbon atoms; (ii) when R.sup.a is alkoxy and x is 1 then R.sup.a is other than propoxy; (iii) when one or more R.sup.a are alkylthio and the others (if any) are alkyl then the alkylthio group has at least 2 carbon atoms; (iv) when R.sup.a is aryloxy and x is 3 then at least one group R.sup.a is other than aryloxy. The compounds are useful intermediates in an improved process for preparing fused carbocyclic ring derivatives of pyridine especially 5,6,7,8-tetrahydroquinoline 8-nitriles and thioamides which is described in co-pending U.S. Ser. No. 506,278. The nitriles and thioamides are anti-ulcer and/or anti-secretory agents.
该发明涉及公式IIIA R.sub.x.sup.a Si(NCS).sub.4-x IIIA的新化合物,其中R.sup.a从以下供电子给体取代物中选择:1-10个碳原子的烷氧基,4-8个碳原子的环烷氧基,7-12个碳原子的芳基氧基,苯氧基,可能被1-10个碳原子的烷基,1-10个碳原子的烷氧基或三氟甲基取代,基团R.sup.b R.sup.c N-其中R.sup.b和R.sup.c从1-6个碳原子的烷基,4-6个碳原子的环烷基,可能被1-10个碳原子的烷基,1-10个碳原子的烷氧基或三氟甲基取代的苯基,7-12个碳原子的芳基或R.sup.b和R.sup.c可以连接形成与氮原子的吡咯啉基或哌啶基,该环可能被1-10个碳原子的烷基取代;1-10个碳原子的烷硫基,4-8个碳原子的环烷硫基,7-12个碳原子的芳基硫基,可能被1-10个碳原子的烷基,1-10个碳原子的烷氧基或三氟甲基取代的苯硫基,以及从1-10个碳原子的烷基,4-8个碳原子的环烷基,7-12个碳原子的芳基,或可能被1-10个碳原子的烷基,1-10个碳原子的烷氧基或三氟甲基取代的苯基的烃取代物中选择的烃基,至少一个基团R.sup.a是一个供电子给体取代物,但需满足以下条件:(i)当x为3且所有三个R.sup.a基团相同时,则烷氧基至少有3个碳原子;(ii)当R.sup.a为烷氧基且x为1时,则R.sup.a不是丙氧基;(iii)当一个或多个R.sup.a为烷硫基而其他的(如果有的话)为烷基时,则烷硫基至少有2个碳原子;(iv)当R.sup.a为芳氧基且x为3时,则至少一个R.sup.a基团不是芳氧基。这些化合物是制备吡啶的融合碳环戒的衍生物的改进过程中的有用中间体,特别是5,6,7,8-四氢喹啉-8-腈和硫酰胺,该过程在共同待决的美国专利申请号506,278中描述。这些腈和硫酰胺是抗溃疡和/或抗分泌剂。