Abstract: The present invention relates to novel synthetic antigens, conjugates and antibodies based upon specific peptide sequences and the production thereof. More particularly, the invention relates to a polypeptide which is a determinant site of a protein, the polypeptide having from 8 to 20 amino acid residues, having an amino-terminal amino acid and a carboxyl-terminal amino acid, wherein the polypeptide includes:(a) a four amino acid sequence which corresponds to the four amino acid sequence of a .beta.-turn of the protein;(b) a sequence of two to eight amino acid residues attached to the amino terminal (H.sub.2 N--) of the four amino acid sequence; and(c) a sequence of two to eight amino acid residues attached to the carboxyl terminal (--COOH) of the four amino acid sequence,wherein the amino acid residues of subparts (b) and (c) correspond to those attached to the amino terminal and the carboxyl terminal, respectively of the .beta.

Abstract: The present invention relates to novel synthetic antigens, conjugates and antibodies based upon specific peptide sequences and the production thereof. More particularly, the invention relates to a polypeptide which is a determinant site of a protein, the polypeptide having from 8 to 20 amino acid residues, having an amino-terminal amino acid and a carboxyl-terminal amino acid, wherein the polypeptide includes:(a) a four amino acid sequence which corresponds to the four amino acid sequence of a .beta.-turn of the protein;(b) a sequence of two to eight amino acid residues attached to the amino terminal (H.sub.2 N--) of the four amino acid sequence; and(c) a sequence of two to eight amino acid residues attached to the carboxyl terminal (--COOH) of the four amino acid sequence,wherein the amino acid residues of subparts (b) and (c) correspond to those attached to the amino terminal and the carboxyl terminal, respectively of the .beta.

Abstract: The abstract is disclosed herein are nonapeptides and dodecapeptides which augment natural killer cell activity.

Abstract: This application relates to novel immunological adjuvant compounds of the formula: ##STR1## wherein each of R and R.sup.1 are the same or different and are hydrogen or an acyl radical; R.sup.2 is an unsubstituted or substituted alkyl radical, or an unsubstituted or substituted aryl radical; R.sup.6 is an alkyl radical X is an aminoacyl moiety; and Y is D-isoasparagine or D-isoglutamine.

Abstract: This application relates to novel immunological adjuvant compounds of the formula: ##STR1## wherein each of R and R.sup.1 are the same or different and are hydrogen or an acyl radical; R.sup.2 is an unsubstituted or substituted alkyl radical, or an unsubstituted or substituted aryl radical; X is an aminoacyl moiety; and Y is D-isoasparagine or D-isoglutamine.

Abstract: 3'-O-Acyl- and 3-'-O-acyl-5-'-O-acyl- derivatives of 1-(.beta.-D-arabinofuranosyl)-cytosines and methods of preparing these compounds and also O.sup.2,2'-anhydro-1-(3'-O-acyl-5'-O-acyl-.beta.-D-arabinofuranosyl)-cytos ine salts. The O.sup.2,2'-anhydro-1-(3'-O-acyl-5'-O-acyl-.beta.-D-arabinofuranosyl)-cytos ine nucleoside salts are prepared by direct acid catalyzed acylation of the salts of the corresponding O.sup.2,2'-anhydro-1-(.beta.-D-arabinofuranosyl)-cytosines or 3'-O-acyl- derivatives, under carefully controlled conditions. The 3'-O-acyl- and 3'-O-acyl-5'-O-acyl-1-(.beta.-D-arabinofuranosyl)-cytosines are prepared from the corresponding O.sup.2,2'-anhydro nucleosides via selective cleavage of the O.sup.2,2'-anhydro bridge under carefully controlled conditions. The compounds exhibit anti-viral, cytotoxic and anti-neoplastic activity, and thus are useful for the treatment of mammals where such agents are indicated.

Abstract: A novel class of intermediates from which a variety of uronic acid nucleosides can be produced, said class being represented by the following formula: ##SPC1##WhereR.sub.1 and R.sub.2 are lower alkyl radicals having one to six carbon atoms, or phenyl radicals;R.sub.3 is a lower alkyl radical having one to four carbon atoms; and the wavy line at the 5' position indicates both the 5'-D-allo and 5'-L-talo epimers.A process for producing these intermediates is described. A process for converting these intermediates to uronic acid nucleosides having the following formula: ##SPC2##WhereB is a pyrimidine or purine base, is also described.Novel uronic acid nucleosides, having structures falling within the general formula given above, are identified.