Total Synthesis, Assignment of the Absolute Stereochemistry, and Structure-Activity Relationship Studies of Subglutinols A and B
作者:Hyoungsu Kim、Joseph B. Baker、Yongho Park、Hyung-Bae Park、Patrick D. DeArmond、Seong Hwan Kim、Michael C. Fitzgerald、Dong-Sup Lee、Jiyong Hong
DOI:10.1002/asia.201000147
日期:——
proliferation assay (IC50=0.1 μM). Owing to the lack of toxicity, 1 a and 1 b are expected to be promising new immunosuppressive drugs. Herein, we detail our efforts that have culminated in a stereoselective synthesis of 1 a and 1 b from the (S)‐(+)‐5‐methyl‐Wieland–Miescher ketone and determined their absolute stereochemistries. We also present initial biological data to show the great potential of 1 a as an immunosuppressive
免疫抑制药物可用于预防移植器官的排斥反应和治疗自身免疫性疾病。临床认可的免疫抑制药物具有不良副作用,包括急性神经毒性,慢性肾毒性和骨质疏松症。结果,已经付出了巨大的努力来鉴定缺乏细胞毒性和对骨骼结构不利的副作用的免疫抑制天然产物。亚谷蛋白A(1a)和B(1b)是从枯萎镰刀菌(Fusarium subglutinans)中分离出的二萜酮。化合物1和图1b是在混合淋巴细胞反应实验和胸腺细胞增殖测定等效(IC 50 = 0.1μ中号)。由于缺乏毒性,预期1a和1b将是有前途的新的免疫抑制药物。本文中,我们详细介绍了我们的努力,最终是从(S)-(+)-5-甲基-Wieland-Miescher酮立体选择性合成1 a和1 b,并确定了它们的绝对立体化学。我们还提供了初步的生物学数据,以显示1 a作为具有剂量依赖性成骨活性的免疫抑制药物的巨大潜力。