Abstract: Compounds comprising a pyrrolidinyl ring are disclosed for use in the treatment of cerebral ischemia.

Abstract: The present invention provides stannylated 3-quinuclidinyl benzilate compounds and a method of synthesizing *AQNB by iodinating such stannylated 3-quinuclidinyl benzilate compounds. The iodination of these stannylated 3-quinuclidinyl benzilates proceeds in as little as five minutes; thus, the stannylated 3-quinuclidinyl benzilates may be converted to *AQNB in situ for immediate use. Using this method, radiolabelling yields as high as 80% have been observed. The present invention also is directed towards a method of synthesis of the stannylated 3-quinuclidinyl benzilate compounds. The method comprises providing a 4'-halo-3-quinuclidinyl benzilate and reacting the 4'-halo-3-quinuclidinyl benzilate with a compound having the formula (SnR.sub.3).sub.2, wherein R is an alkyl.

Abstract: Substituted carbamates of tricyclic compounds which have a cyclic sulfer atom, provide highly potent and selective cholinergic agonist and blocking activity are useful as pharmaceutical agents. Cholinergic disease are treated with these compounds such as glaucoma, Myasthenia Gravis, Alzheimer's disease. Methods for inhibiting esterases, acetylcholinesterase and butyrylcholinesterase are also provided.

Abstract: Certain nitrogen-containing cyclohetero cycloalkylaminoaryl compounds are described for treatment of CNS disorders such as cerebral ischemia, psychoses and convulsions. Compounds of particular interest are of the formula: ##STR1## wherein each of R.sup.1, R.sup.4, R.sup.5, R.sup.6 and R.sup.7 is independently selected from hydrido, lower alkyl, benzyl, and haloloweralkyl; wherein each of R.sup.2, R.sup.3 and R.sup.8 through R.sup.11 is independently selected from hydrido, hydroxy, loweralkyl, benzyl, phenoxy, benzyloxy and haloloweralkyl; wherein n is an integer of from four to six; wherein m is an integer of from two to four; wherein A is selected from phenyl, naphthyl, benzothienyl, benzofuranyl and thienyl; wherein any of the foregoing A groups can be further substituted with one or more substituents independently selected from hydrido, hydroxy, loweralkyl, loweralkoxy, halo, haloloweralkyl, amino, monoloweralkylamino and diloweralkylamino; or a pharmaceutically acceptable salt thereof.

Abstract: The present invention relates to substituted phenylcarbamate or naphthylcarbamate tricyclic compounds which provide highly potent and selective cholinergic agonist and blocking activity and their use as pharmaceutical agents. The invention further relates to improvements in therapy relative to cholinergic diseases such as glacuoma, Myasthenia Gravis, Alzheimer's disease and to improvements in therapy and organophosphate poisoning. The invention further provides for a selective acetylcholinesterase and butyrylcholinesterase agents and a method for inhibiting these esterases.