申请人:Ajinomoto Co., Inc.
公开号:EP0691346A1
公开(公告)日:1996-01-10
A low-calory sweetener is provided which is highly stable and safe and has a high sweetness potency. This sweetener comprises novel aspartyldipeptide derivatives of the following general formula (1) and their salts:
L-Asp-X-NH-C*HR₁R₂ (1)
wherein R₁ represents an alkyl group having from 1 to 6 carbon atoms, or an alkoxymethyl group having from 2 to 7 carbon atoms; R₂ represents a phenyl group, a benzyl group, a cyclohexyl group, or a cyclohexylmethyl group; the structure having the C* atom is of an (S) form when R₁ is an alkyl group but is of an (R) form when R₁ is an alkoxymethyl group; X represents a residue of a D-α-amino acid or DL-α-amino acid, or a residue of a cyclic or acyclic α,α-dialkylamino acid having from 3 to 6 carbon atoms, when R₁ is an alkyl group, but X represents a residue of a D-α-amino acid or DL-α-amino acid, or a residue of a cyclic or acyclic α,α-dialkylamino acid having from 3 to 6 carbon atoms, when R₁ is an alkoxymethyl group; and the bond between L-Asp and X is an α-bond.
本发明提供了一种低热量甜味剂,它具有高度稳定性和安全性,并具有较高的甜味效力。这种甜味剂包括以下通式(1)的新型天冬二肽衍生物及其盐类:
L-Asp-X-NH-C*HR₁R₂ (1)
其中 R₁ 代表具有 1 至 6 个碳原子的烷基,或具有 2 至 7 个碳原子的烷氧基甲基;R₂ 代表苯基、苄基、环己基或环己基甲基;当 R₁ 为烷基时,具有 C* 原子的结构为 (S) 形式,但当 R₁ 为烷氧基甲基时,具有 C* 原子的结构为 (R) 形式;当 R₁ 是烷基时,X 代表 D-α-氨基酸或 DL-α-氨基酸的残余物,或具有 3 至 6 个碳原子的环状或非环状 α,α-二烷基氨基酸的残余物、但当 R₁ 为烷氧基甲基时,X 代表 D-α-氨基酸或 DL-α-氨基酸的残基,或具有 3 至 6 个碳原子的环状或非环状 α,α-二烷基氨基酸的残基;L-Asp 与 X 之间的键为α键。