Abstract: The present invention relates to novel Aerothricins represented by the Formula (I), wherein R1, R2, R3, R4, R5, X, Y, Z, and m are as defined in Claim 1; and pharmaceutically acceptable salts thereof. The present invention also relates to a pharmaceutical composition comprising an Aerothricin of the Formula (I) and a pharmaceutically acceptable carrier. Furthermore, the present invention relates to the use of such Aerothricins for the preparation of medicaments, as well as to processes and intermediates for the preparation of the Aerothricins of the Formula (I).

Abstract: The present invention provides blockers for glutamate transporters. During a series of syntheses searching for glutamate uptake inhibition in Xenopus oocytes injected with bovine glutamate transporter genes (BGLAST), we obtained .beta.-hydroxyaspartic acid derivatives of the following chemical formula (1): ##STR1## wherein R represents an aromatic acyl group which may be substituted on the ring, a straight or branched lower aliphatic acyl group, an aryl group which may be substituted on the ring, an aralkyl group which may be substituted on the ring, or a straight or branched lower alkyl group; and salts thereof. These compounds are blockers of glutamate transporters, which are useful for the understanding of the function of glutamate transporters and show promise for the treatment of various neurodegenerative diseases.

Abstract: A t-butyldimethylsilyl carbamate derivative and a process for producing the same are disclosed. Tertiary-butyldimethylsilyl carbamate derivatives having the following general formula (1) are intermediates for the production of a variety of carbamate esters that can be extensively used as drugs acting on the central nervous system or circulatory organs, as agrichemicals (e.g. insecticides and herbicides), or as antimicrobial agents; a process capable of economical and efficient production of such intermediates is also disclosed: ##STR1## where R.sup.1 is an alkyl group having 1-3 carbon atoms or a hydrogen atom; R.sup.2 is ##STR2## (where R.sup.3 is a hydrogen atom, an alkyl, alkenyl or aralkyl group having 1-10 carbon atoms, each of which groups may be substituted by a hydroxyl group, a t-butyldimethylsilyloxy group, a methylthio group, a lower alkoxycarbonyl group, a lower alkoxy group, an indolyl group or an imidazolyl group; R.sup.

Abstract: This invention relates to a process for producing statin having the general formula (I): ##STR1## and related compounds thereof; (wherein R is a C1 to C6 alkyl group, a phenyl group or a C7 to C8 phenylalkyl group and B is a protective group for an amino group).Recently, the anti-hyproperties of statin, namely the renin inhibitive properties, are attracting general attention.