Synthesis and evaluation of the antitumor agent TMC-69-6H and a focused library of analogs
作者:Alois Fürstner、Fabian Feyen、Heino Prinz、Herbert Waldmann
DOI:10.1016/j.tet.2004.06.139
日期:2004.10
peroxomolybdenum complex [(pyridine)MoO5(HMPA)] to form the hydroxamic acid motif. The flexibility inherent to this route allows for the preparation of a focused library of analogues for biochemical evaluation. The results obtained show that N-hydroxy-2-pyridone derivatives constitute a promising new class of selective phosphatase inhibitors. In contrast to previous reports in the literature, however, TMC-69-6H
描述了有效的抗肿瘤药TMC-69-6H(2)的简明,有效和灵活的全合成。关键步骤包括在乙酸吡喃酯6中钯催化的4-羟基-2-吡啶酮5的区域选择性加成,同时将酚-OH基团自发地1,4-加成到新兴的烯酮上,从而得到优异的三环产物7屈服。当在手性配体(S,S)-12存在下用旋光富集的(S)-6(通过脂肪酶催化的动力学动力学拆分方便地制备)进行反应时和烯丙基钯氯化物二聚体,随之而来的情况是在96%ee中提供了关键结构单元(-)- 7。将其进一步加工为2涉及四唑基砜19的Julia-Kocienski烯烃化反应和由过氧钼配合物[(吡啶)MoO 5(HMPA)]形成的最终N-氧化,从而形成异羟肟酸基序。该途径固有的灵活性允许制备用于生化评估的类似物集中库。获得的结果表明,N-羟基-2-吡啶酮衍生物构成了有前途的一类新的选择性磷酸酶抑制剂。然而,与文献中先前的报道相反,发现TMC-69-6H和同类物对酪氨