Effect of fluorine substitution of α-and β-hydrogen atoms in ethyl phenylacetate and phenylpropionate on their stereoselective hydrolysis by cultured cancer cells
作者:Yoshimitsu Yamazaki、Shiro Yusa、Yu-ichi Kageyama、Hirohito Tsue、Ken-ichi Hirao、Hiroaki Okuno
DOI:10.1016/s0022-1139(96)03485-9
日期:1996.8
towards (S) -2b by other cells such as ras oncogenetransformed rat liver Anr4 cells. These stereoselectivities were different from those for non-fluorinated ( ±)-ethyl 2-phenylpropionate. Thus fluorine atoms are recognized by ester hydrolases of cancer cells, and fluorine substitution on the acyl group will be useful for making estertype anticancer prodrugs more specific to cancer cells.
(±)2-氟-2-苯基乙酸乙酯被几种大鼠癌细胞系的培养细胞立体选择性地水解,得到富含R对映异构体的羧酸。立体选择性增加了(±)-2-氟-2-苯基(2B与所有本细胞系)和(±)-2-苯基-3,3,3-三氟代(3b)的与大鼠肝癌McA- RH7777细胞系。立体选择性对于不同的细胞系是不同的,因为McA-RH7777细胞更偏爱(R)-2b,而其他细胞(如ras)偏爱(S)-2b癌基因转化的大鼠肝脏Anr4细胞。这些立体选择性不同于未氟化的(±)-2-苯基丙酸乙酯。因此,氟原子被癌细胞的酯水解酶识别,并且酰基上的氟取代将用于使酯型抗癌前药对癌细胞更具特异性。