作者:Vladimir N. Barai、Anatoli I. Zinchenko、Ludmilla A. Eroshevskaya、Elena V. Zhernosek、Erik De Clercq、Igor A. Mikhailopulo
DOI:10.1002/1522-2675(200207)85:7<1893::aid-hlca1893>3.0.co;2-p
日期:2002.7
formation of uracil (4) and 3-deoxy-α-D-erythro-pentofuranose-1-O-phosphate (5), and iii) coupling of the latter with 2 catalyzed by whole cell (E. coli BMT-4D/1A) purine nucleoside phosphorylase (PNPase). Deamination of 6 by adenosine deaminase (ADase) gave 3′-deoxyguanosine (7). Treatment of 6 with NaNO2 afforded 9-(3-deoxy-β-D-erythro-pentofuranosyl)-2-amino-6-oxopurine (3′-deoxyisoguanosine; 8). Schiemann
9-(3-Deoxy-β-D-erythro-pentofuranosyl)-2,6-diaminopurine (6) 通过 2,6-diaminopurine (2) 与 3'-deoxycytidine (1) 作为供体的酶促转糖基化合成3-脱氧-D-赤型呋喃糖部分。这种转化包括 i) 在全细胞 (E.coli BM-11) 胞苷脱氨酶 (CDase) 的作用下 1 到 3'-脱氧尿苷 (3) 的脱氨基作用,ii) 尿苷磷酸化酶 (UPase) 对 3 的磷酸分解,从而产生导致形成尿嘧啶 (4) 和 3-deoxy-α-D-erythro-pentofuranose-1-O-phosphate (5),以及 iii) 后者与 2 在全细胞催化下偶联(大肠杆菌 BMT- 4D/1A) 嘌呤核苷磷酸化酶 (PNPase)。腺苷脱氨酶 (ADase) 对 6 进行脱氨基作用得到 3'-脱氧鸟苷