POSITIVELY CHARGED WATER-SOLUBLE PRODRUGS OF 1H-IMIDAZO[4,5-C]QUINOLIN-4-AMINES AND RELATED COMPOUNDS WITH VERY HIGH SKIN PENETRATION RATES
申请人:Yu, Chongxi
公开号:EP3176169A1
公开(公告)日:2017-06-07
The novel positively charged pro-drugs of 1H-imidazo[4, 5-c]quinolin-4-amines and related compounds in the general formula (1) 'Structure 1' or formula (2) 'Structure 2' were designed and synthesized. The compounds of the general formula (1) 'Structure 1' or formula (2) 'Structure 2' indicated above can be prepared from 1H-imidazo[4, 5-c]quinolin-4-amines and related compounds, by reaction with suitable acetic anhydride or acetic chloride. 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. This bonding will disturb the membrane a little bit and may make some room for the lipophilic portion of the prodrug. When the molecules of membrane move, the membrane may 'crack' a little bit due to the bonding of the prodrug. This will let the prodrug insert into the membrane. At pH 7.4, only about 99% of the amino group is protonated. When the amino group is not protonated, the bonding between the amino group of the prodrug and the phosphate head group of the membrane will disassociate, and the prodrug will enter the membrane completely. When the amino group of the prodrug flips to the other side of the membrane and thus becomes protonated, then the prodrug is pulled into the cytosol, a semi-liquid concentrated aqueous solution or suspension. The results suggest that the pro-drugs diffuse through human skin -25 times faster than do 1H-imidazo[4, 5-c]quinolin-4-amines and related compounds. In plasma, more than 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 1H-imidazo[4,5-c]quinolin-4-amines 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 1H-imidazo[4,5-c] quinolin-4-amines and related compounds. Controlled transdermal administration systems of the prodrug enables 1H-imidazo[4, 5-c]quinolin-4-amines and related compounds to reach constantly optimal therapeutic blood levels to increase effectiveness and reduce the side effects of 1H-imidazo[4, 5-c]quinolin-4-amines and related compounds.
设计并合成了通式(1)"结构 1 "或式(2)"结构 2 "的 1H-咪唑并[4,5-c]喹啉-4-胺及相关化合物的新型带正电的原药。上述通式(1)"结构 1 "或式(2)"结构 2 "的化合物可由 1H-咪唑并[4,5-c]喹啉-4-胺和相关化合物通过与合适的醋酸酐或醋酰氯反应制备而成。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,而且还与膜的磷酸头基上的负电荷结合。这种结合会对膜产生一些干扰,可能会为原药的亲脂部分腾出一些空间。当膜分子移动时,由于原药的键合作用,膜可能会 "裂开 "一点。这将使原药插入膜中。在 pH 值为 7.4 时,只有约 99% 的氨基被质子化。当氨基没有被质子化时,原药的氨基与膜的磷酸头基之间的键就会脱离,原药就会完全进入膜中。当原形药的氨基翻转到膜的另一侧从而质子化时,原形药就会被拉入半流体浓缩水溶液或悬浮液的细胞质中。结果表明,原药在人体皮肤中的扩散速度是 1H-咪唑并[4, 5-c]喹啉-4-胺和相关化合物的 25 倍。在血浆中,90% 以上的原药可在几分钟内变回母药。这些原药可用于治疗人类或动物体内任何可治疗的 1H-咪唑并[4,5-c]喹啉-4-胺及相关化合物疾病。原药可以透皮给药,用于任何类型的医疗,并避免 1H-咪唑并[4,5-c]喹啉-4-胺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 1H-咪唑并[4,5-c]喹啉-4-胺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 1H-咪唑并[4,5-c]喹啉-4-胺和相关化合物的副作用。