Chemoenzymatic Synthesis of the Polyketide Macrolactone 10-Deoxymethynolide
作者:Courtney C. Aldrich、Lakshmanan Venkatraman、David H. Sherman、Robert A. Fecik
DOI:10.1021/ja0504340
日期:2005.6.1
the natural product 10-deoxymethynolide. A steady-state kinetic analysis of the hexaketidechain intermediate with Pik TE was done. A preliminary substrate specificity study with unnatural hexaketide analogues was accomplished, demonstrating the importance of total synthesis in obtaining access to advanced polyketide intermediates. The results show the sensitivity of Pik TE to minor substrate modifications
聚酮合酶衍生的皮克霉素硫酯酶 (Pik TE) 具有独特的催化 12 和 14 元大环内酯环化的能力。在这项研究中,天然六酮链延长中间体作为其 N-乙酰半胱胺 (NAC) 硫酯的全合成已经实现,其与 Pik TE 的反应证明了 Pik TE 催化其大环内酯化成天然产物 10-脱氧甲炔内酯。使用 Pik TE 对六酮链中间体进行稳态动力学分析。完成了对非天然六酮化合物类似物的初步底物特异性研究,证明了全合成在获得高级聚酮化合物中间体方面的重要性。结果表明 Pik TE 对微小的底物修饰敏感,
Total Synthesis of Rapamycin
作者:Steven V. Ley、Miles N. Tackett、Matthew L. Maddess、James C. Anderson、Paul E. Brennan、Michael W. Cappi、Jag P. Heer、Céline Helgen、Masakuni Kori、Cyrille Kouklovsky、Stephen P. Marsden、Joanne Norman、David P. Osborn、María Á. Palomero、John B. J. Pavey、Catherine Pinel、Lesley A. Robinson、Jürgen Schnaubelt、James S. Scott、Christopher D. Spilling、Hidenori Watanabe、Kieron E. Wesson、Michael C. Willis
DOI:10.1002/chem.200801656
日期:2009.3.9
Rapamycin (1) is a macrocyclic natural product, established as a potent immunosuppressant and currently of interest to the scientific community as the framework for a series of novel anticancer drugs. Extensive studies have culminated in a new convergent totalsynthesis of 1, which features a number of group‐derived methodologies and an unusual catechol‐templating strategy for the construction of the
Total Synthesis of 10-Deoxymethynolide and Narbonolide
作者:Richeng Xuan、Hong-Se Oh、Younghoon Lee、Han-Young Kang
DOI:10.1021/jo702384d
日期:2008.2.1
flexible and convenient approach was developed for the synthesis of 10-deoxymethynolide (1) and narbonolide (2), which are aglycones of the methymycin and the pikromycin families of macrolide antibiotics. These lactones are produced by pikromycin polyketide synthase from Streptomyces venezuelae. Polyketide lactones, 10-deoxymethynolide and narbonolide, which contain 12- and 14-membered rings, respectively