Provided is a novel protein phosphatase inhibitor. The protein phosphatase inhibitor contains, as an active ingredient, a silicon compound represented by the following general formula (1) or a salt thereof, wherein R1, R2 and R3 are the same or different and represent a hydrocarbon group having 1 to 12 carbon atoms; X represents an optionally substituted hydrocarbon group having 3 to 36 carbon atoms or an optionally substituted heterocyclic group; and n represents an integer of 0 or 1.
                            本发明提供了一种新型蛋白
磷酸酶
抑制剂。该蛋白
磷酸酶
抑制剂含有下通式(1)代表的
硅化合物或其盐作为活性成分,其中 R1、R2 和 R3 相同或不同,代表具有 1 至 12 个碳原子的烃基;X 代表具有 3 至 36 个碳原子的任选取代的烃基或任选取代的杂环基;n 代表 0 或 1 的整数。