Abstract: There are disclosed tetrahydrofuran compounds and analogs thereof of the formula: ##STR1## and pharmaceutically acceptable acid addition salts thereof, wherein X is oxygen or sulfur, R.sup.1 and R.sup.2 are each hydrogen, halogen, lower alkyl or lower alkoxy, and Am is a group of the formula: ##STR2## wherein Z is oxygen or sulfur, R.sup.3 is hydrogen or halogen, R.sup.4 is hydrogen, lower alkyl or phenyl which may be substituted by 1 to 3 substituents at any position(s) on the phenyl nucleus, each substituent being independently selected from halogen, lower alkyl and lower alkoxy, and R.sup.5 is hydrogen or lower alkyl. Such compounds are useful as neuroleptics.

Abstract: Benzothiazine derivatives represented by the formula ##STR1## wherein R.sub.1 is hydrogen, alkyl, alkoxycarbonyl, alkoxalyl, phenyl which may optionally have a substituent or substituents, cycloalkyl or aralkyl, R.sub.2 is hydrogen or alkyl, X is sulphur or oxygen, and Y is methylene or ethylene, and acid addition salts thereof. These compounds are useful as analgesic agents, anti-inflammatory agents, anti-allergic agents, anti-arthritic agents, circulation-improving agents or like pharmaceutics.

Abstract: Morpholine compounds of the formula: ##STR1## wherein each of R.sup.1 and R.sup.2 is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and pharmaceutically acceptable acid addition salts thereof, have strong inhibitory activities on peptic ulcer, gastric motility and gastric secretion but have very weak acetylcholine antagonistic activity.

Abstract: 1-[Methylated piperidino (and pyrrolidin-1-yl)]-3-(substituted phenoxy)-2-propanols of the formula: ##SPC1##Wherein R is a 2-thienylmethyl group, a 2-pyridylmethyl group, a 2-pyridyl group, a tetrahydrofurfuryloxy group, a furfuryloxy group, a 2-thienylmethoxy group, a 2-pyridyloxy group or a group of the formula R.sup.5 --X--A--O-- wherein R.sup.5 is a lower alkyl group, X is --O--, --S-- or --SO.sub.2 --, and A is a lower alkylene group or a --CH.sub.2 --C.ident.C--CH.sub.2 -- group, R.sup.1 is a hydrogen atom, a lower alkyl group or a halogen atom, R.sup.2, R.sup.3 and R.sup.4 are each a hydrogen atom or a methyl group, and n is zero or 1, and pharmaceutically acceptable acid addition and quarternary ammonium salts thereof are disclosed. They exhibit antiarrhythmic action, local anaesthetic action, analgesic action and gastric juice secretion inhibiting action.