Inhaltsstoffe tropischer Arzneipflanzen, 29. Mitt. Synthese des Annonidin B. Constituents of Tropical Medicinal Plants, XXIX: Synthesis of Annonidine B
作者:Hans Achenbach、Dieter Franke
DOI:10.1002/ardp.19873200619
日期:——
Synthese du compose du titre et d'α',α'-dimethyl isoprenyl-7' propenylene-3,3' bis-indole a partir de methyl-3' butadiene-1',3' yl-3 tosyl-1 indole
Synthesis du compose du titre et d'α', α'-二甲基异戊二烯-7'丙烯基-3,3'bis-indole a partir demethyl-3' butadiene-1', 3' yl-3 tosyl-1 indole
Total Syntheses of Demethylasterriquinone B1, an Orally Active Insulin Mimetic, and Demethylasterriquinone A1
作者:Michael C. Pirrung、Zhitao Li、Kaapjoo Park、Jin Zhu
DOI:10.1021/jo020182a
日期:2002.11.1
monoaddition using the sterically hindered 2-isoprenylindole. This permits addition of the second indole, 7-prenylindole, which gives both meta- and para-substituted bis-indolylquinone products. This regiochemical control problem was solved by extension of a method we recently developed for acid-promotedaddition of indoles to 2,5-dichlorobenzoquinone. Under our original mineral acid conditions, reaction
This communication describes the first total synthesis of asterriquinone B1, a representative member of a group of anti-tumor metabolites of Aspergillus terreus. The synthesis described herein is potentially applicable to other members of the asterriquinone family.
Methyl Scanning: Total Synthesis of Demethylasterriquinone B1 and Derivatives for Identification of Sites of Interaction with and Isolation of Its Receptor(s)
作者:Michael C. Pirrung、Yufa Liu、Liu Deng、Diana K. Halstead、Zhitao Li、John F. May、Michael Wedel、Darrell A. Austin、Nicholas J. G. Webster
DOI:10.1021/ja044325h
日期:2005.4.1
activity against even unknown targets, and thus provides an excellent complement to structural biology. Methyl scanning was applied to demethylasterriquinone B1, a small-molecule mimetic of insulin. A new, optimal totalsynthesis of this natural product was developed that enables the family of methyl scan derivatives to be concisely prepared for evaluation in a cellular assay. The results of this experiment
Synthesis of 2,5-Dihydroxy-3-(indol-3-yl)benzoquinones by Acid-Catalyzed Condensation of Indoles with 2,5-Dichlorobenzoquinone
作者:Michael C. Pirrung、Liu Deng、Zhitao Li、Kaapjoo Park
DOI:10.1021/jo0204597
日期:2002.11.1
conjugate addition of indoles to 2,5-dichlorobenzoquinone have been developed. A wide variety of indoles substituted with halogen, alkyl, alkoxy, and aryl groups participate in anaerobic condensation reactions promoted by HCl, H2SO4, or CH3CO2H. The hydroquinone product is partially oxidized by excess dichlorobenzoquinone and fully converted to the 2,5-dichloro-3-(indol-3-yl)benzoquinone targets by