and salts thereof, wherein X is a D-.alpha.-amino acid residue or a DL-.alpha.-amino acid residue selected from the group consisting of D-alanine, D-.alpha.-aminobutyric acid, D-norvaline, D-valine, D-norleucine, D-leucine, D-isoleucine, D-alloisoleucine, D-t-leucine, D-serine, D-O-methylserine, D-t
and salts thereof, wherein X is a D-.alpha.-amino acid residue or a DL-.alpha.-amino acid residue selected from the group consisting of D-alanine, D-.alpha.-aminobutyric acid, D-norvaline, D-valine, D-norleucine, D-leucine, D-isoleucine, D-alloisoleucine, D-t-leucine, D-serine, D-O-methylserine, D-threonine, D-O-methylthreonine, D-allothreonine, D-O-methylallothreonine, D-phenyl glycine and D- or DL furyl glycine, or X is a cyclic or non-cyclic .alpha., .alpha.-dialkyl amino acid residue having 3 to 6 carbon atoms; R.sub.1 is a linear or branched alkyl group having 1 to 6 carbon atoms or an alkoxymethyl group having 2 to 7 carbon atoms in the alkoxy portion; R.sub.2 is a phenyl group having a substituent in its 2, 3- or 4-position selected from the group consisting of F, Cl, Br, I, a hydroxy group, a linear or branched alkoxy group having 1 to 6 carbon atoms, a cyano group, a nitro group, an acetyl group, an amino group and an acetylamino group, or R.sub.2 is a phenyl group having a methylenedioxy group, a trimethylene group or a tetramethylene group in its 2, 3- or 3, 4- position or R.sub.2 is a 2, 3- or 4-pyridyl group, a 2- or 3-furyl group or a 2- or 3-thienyl group; the configuration of C* in formula (I) is (S) or (RS) when R.sub.1 is a linear or branched alkyl group; (R), (S), or (RS) when R.sub.1 is an alkoxymethyl group; and in formula (I), L-Asp and X are .alpha.-bonded.
대표청구항▼
[ What is claimed as new and desired to be secured by letters patent of the U.S. is:] [1.] Aspartyldipeptideamide compounds of formula (I): EQU L--Asp--X--NH--C*HR.sub.1 R.sub.2 (I) salts thereof, wherein X is a D-.alpha.-amino acid residue or a DL-.alpha.-amino acid residue selected from the group
[ What is claimed as new and desired to be secured by letters patent of the U.S. is:] [1.] Aspartyldipeptideamide compounds of formula (I): EQU L--Asp--X--NH--C*HR.sub.1 R.sub.2 (I) salts thereof, wherein X is a D-.alpha.-amino acid residue or a DL-.alpha.-amino acid residue selected from the group consisting of D-alanine, D-.alpha.-aminobutyric acid, D-norvaline, D-valine, D-norleucine, D-leucine, D-isoleucine, D-alloisoleucine, D-t-leucine, D-serine, D-O-methylserine, D-threonine, D-O-methylthreonine, D-allothreonine, D-O-methylallothreonine, D-phenyl glycine and D- or DL furyl glycine, or X is a cyclic or non-cyclic .alpha., .alpha.-dialkyl amino acid residue having 3 to 6 carbon atoms; R.sub.1 is a linear or branched alkyl group having 1 to 6 carbon atoms or an alkoxymethyl group having 2 to 7 carbon atoms in the alkoxy portion; R.sub.2 is a phenyl group having a substituent in its 2, 3- or 4-position selected from the group consisting of F, Cl, Br, I, a hydroxy group, a linear or branched alkoxy group having 1 to 6 carbon atoms, a cyano group, a nitro group, an acetyl group, an amino group and an acetylamino group, or R.sub.2 is a phenyl group having a methylenedioxy group, a trimethylene group or a tetramethylene group in its 2, 3- or 3, 4- position or R.sub.2 is a 2, 3- or 4-pyridyl group, a 2- or 3-furyl group or a 2- or 3-thienyl group; the configuration of C* in formula (I) is (S) or (RS) when R.sub.1 is a linear or branched alkyl group; (R), (S) , or (RS) when R.sub.1 is an alkoxymethyl group; and in formula (I), L-Asp and X are .alpha.-bonded.
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