Synthesis and radioiodination of 3-(E)-(2-iodovinyl)-N-acetyl-4-cysteaminylphenol, a putative tyrosinase substrate for imaging neural crest tumours
作者:Shradha Singh、Kowichi Jimbow、Piyush Kumar、Alexander J. McEwan、Leonard I. Wiebe
DOI:10.1002/(sici)1099-1344(199805)41:5<355::aid-jlcr88>3.0.co;2-k
日期:1998.5
The synthesis of 3-(E)-(2-iodovinyl)-N-acetyl-4-cysteaminylphenol (3-IV-N-ACA-SCAP) started from 3-iodophenol, which on condensation with cysteamine hydrochloride gave 3-iodo-4-cysteaminylphenol (1). Acetylation of 1 followed by selective deacetylation yielded 3-iodo-N-acetyl 4-cysteaminylphenol (3-1-N-Ac-4-SCAP; 3). The stereospecific reaction of (E)-1-trimethylsilyl-2-tri-n-butyltinethylene with
3-(E)-(2-iodovinyl)-N-acetyl-4-cysteaminylphenol (3-IV-N-ACA-SCAP) 从 3-iodophenol 开始合成,与半胱胺盐酸盐缩合得到 3-iodo- 4-半胱氨酰苯酚 (1)。1 的乙酰化然后选择性脱乙酰产生 3-碘-N-乙酰基 4-半胱氨酰苯酚 (3-1-N-Ac-4-SCAP; 3)。(E)-1-trimethylsilyl-2-tri-n-butyltinethylene 与 3 的立体有择反应得到乙烯基-TMS 前体 3-(E)-(2-trimethylsilylvinyl)-N-acetyl-4-cysteaminylphenol (3-TMS -N-Ac-4-SCAP;4) 高产。这种 TMS 乙烯基前体是用于高比活性放射性碘化反应的有用合成子。合成子 3-(E)-(2-trimethylsilylvinyl)-N