abstract |
(57) [Summary] [Structure] The novel 4-phosphonoglucosamines of the present invention have the general formula: And a salt and ester thereof. In the formula, R 1 and R 2 : Substitutable (Group A) C6-20 aliphatic acyl group, n: 0-18 [Group A] Hydroxyl group, halogen, halogen-substitutable C6-20 Aliphatic acyloxy group. [Effect] The compound of the present invention exhibits an excellent macrophage activating effect and is useful as an immunostimulant or an antitumor agent. |