Abstract: The present invention provides a process for producing a metal or metalloid salt of methyl methy phosphonic acid which comprises reacting, under non-aqueous conditions, dimethyl methylphosphonate with a finely divided form of an oxide or hydroxide of one or more metals or metalloids from group IIA, IIB, IIIA, IVA, IVB, VA, VIB, VIIB or VIII of the Periodic Chart of Elements, at an elevated temperature.

Abstract: There is described a 2-oxa-isocephem compound of the formula: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.4 are as defined, and R.sup.3 is a group of the formula: ##STR2## wherein n, m, R.sup.6, R.sup.7, B.sup.- and l are as defined, or pharmaceutically acceptable salt thereof. The compound has antimicrobial activity.

Abstract: This invention relates to novel azetidines and derivative thereof, as well as to pharmaceutical compositions and methods of treating memory and learning disorders. Another aspect of the invention relates to a method of utilizing the compounds and compositions as biological tools and materials for characterizing excitatory amino acid receptor systems. A further aspect of the invention relates to a method of treating PCP toxicity and abuse.

Abstract: The 3-aminoazetidine, its salts, new intermediates of formula ##STR1## wherein X' represents hydrogen or a protecting group and both X" represent hydrogen or, together with the nitrogen atom, a phthalimido group, X' not and both X" being hydrogen at the same time; a process for the preparation of the 3-aminoazetidine, starting from a 1-protected 3-sulfonyloxyazetidine by reaction with the potassium phthalimide and transformation of the above mentioned intermediates.

Abstract: Preparation of azetidine-3-carboxylic acid or a salt thereof from N-benzylazetidine-3-carboxylic acid or a salt thereof by catalytically hydrogenating the N-benzylazetidine-3-carboxylic compound in the presence of water, formate ions, and ammonium and/or alkylammonium ions. Novel ammonium and alkylammonium salts are claimed.

Abstract: The compounds of the formula: ##STR1## wherein R is selected from the group consisting of: (a) a substituent having the formula: ##STR2## wherein R.sub.1, R.sub.2 and R.sub.3 are each independently selected from the group consisting of hydrogen, alkyl of 1 to 6 carbon atoms, alkoxy of 1 to 4 carbon atoms, halogen and --NO.sub.2,(b) a substituent having the formula: ##STR3## wherein R.sub.4 is hydrogen or an N(R').sub.2 substituent, wherein R' is an alkyl of 1 to 4 carbon atoms and R.sub.5 is CH or N,(c) alkyl of 1 to 18 carbon atoms,(d) halo-substituted alkyl of 1 to 6 carbon atoms,(e) styrenyl,(f) toluenyl, or(g) camphoryl.The compounds have been found to have anti-neoplastic activity for use in inhibiting the growth of tumors.