This invention relates to the use of temozolomide esters (4-dihydro-3-methyl-4-oxoimidazo[5,1-d]-1,2,3,5-tetrazine-8-carboxylate esters) Formula 1 as potent anticancer pro-drugs for treatment of cancers by topical and transdermal applications, and to a novel process for synthesis of temozolomide esters by a direct esterification of temozolomide acid (3,4-dihydro-3-methyl-4-oxoimidazo[5,1-d]-1,2,3,5-tetrazine-8-carboxylic acid) with a halogeno-aliphatic compound in presence of a base, or with an alcohol in presence of a dehydrate agent.
该发明涉及使用
替莫唑胺酯(4-二
氢-3-
甲基-4-
氧基
咪唑[5,1-d]-1,2,3,5-
四唑-8-
羧酸酯)化合物(式1)作为有效的抗癌前药,用于局部和经皮应用治疗癌症,并涉及一种新型合成
替莫唑胺酯的方法,即通过直接
酯化
替莫唑胺酸(3,4-二
氢-3-
甲基-4-
氧基
咪唑[5,1-d]-1,2,3,5-
四唑-8-
羧酸)与卤代
脂肪化合物在碱的存在下,或与醇在
脱水剂存在下进行
酯化。