Positively charged water-soluble prodrugs of mustards and related compounds with very high skin penetration rates
申请人:Techfields Biochem Co. Ltd
公开号:EP2792670A1
公开(公告)日:2014-10-22
The novel positively charged pro-drugs of mustards and related compounds in the general formula (1) 'Structure 1' were designed and synthesized. The compounds of the general formula (1) 'Structure 1' indicated above can be prepared from mustards and related compounds, by reaction with suitable alcohols, thiols, or amines and coupling reagents, such as N, N'-Dicyclohexylcarbodiimide, N, N'-Diisopropylcarbodiimide, O-(Benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate, O-(Benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate, onzotriazol-1-yl-oxy-tris (dimethylamino)phosphonium hexafluorophosphate, et al. The positively charged amino groups of these pro-drugs not only largely increases the solubility of the drugs in water, but also bonds to the negative charge on the phosphate head group of membranes and pushes the pro-drug into the cytosol. The results suggest that the pro-drugs diffuse through human skin ∼100 times faster than do mustards and related compounds. In plasma, more then 90% of these pro-drugs can change back to the parent drugs in a few minutes. The prodrugs can be used medicinally in treating any mustards and related compounds-treatable conditions in humans or animals. The prodrugs can be administered transdermally for any kind of medical treatments and avoid most of the side effects of mustards and related compounds. Controlled transdermal administration systems of the prodrug enables mustards and related compounds to reach constantly optimal therapeutic blood levels to increase effectiveness and reduce the side effects of mustards and related compounds. Another great benefit of transdermal administration of these pro-drugs is that administering medication, especially to children, will be much easier.
设计并合成了通式(1)"结构 1 "中芥子及相关化合物的新型带正电荷原药。上述通式(1)'结构 1'的化合物可由芥子和相关化合物通过与合适的醇、硫醇或胺和偶联试剂(如 N, N'-Dicyclohexylcarbodiimide, N. N. N'-Diisopropylcarbodiimide, N. N. N'-Disopropylcarbodiimide)反应制备、N'-二异丙基碳二亚胺、O-(苯并三唑-1-基)-N,N,N',N'-四甲基脲四氟硼酸盐、O-(苯并三唑-1-基)-N,N,N',N'-四甲基脲六氟磷酸盐、偶氮三唑-1-基氧基-三(二甲基氨基)鏻六氟磷酸盐等。这些原药带正电荷的氨基不仅在很大程度上增加了药物在水中的溶解度,而且还与膜上磷酸头基的负电荷结合,将原药推入细胞质中。研究结果表明,原药在人体皮肤中的扩散速度比芥子和相关化合物快 100 倍。在血浆中,90%以上的原药可以在几分钟内变回母药。这些原药可用于治疗人或动物的任何芥子气及相关化合物可治疗的疾病。原药可以透皮给药,用于任何类型的医疗,并可避免芥子和相关化合物的大部分副作用。原药的可控透皮给药系统可使芥子剂和相关化合物不断达到最佳治疗血药浓度,从而提高疗效并减少芥子剂和相关化合物的副作用。这些原药透皮给药的另一大好处是,用药(尤其是给儿童用药)将变得更加容易。