Biomimetic Total Synthesis of Angiopterlactone B and Other Potential Natural Products
作者:Tharun K. Kotammagari、Rajesh G. Gonnade、Asish K. Bhattacharya
DOI:10.1021/acs.orglett.7b01525
日期:2017.7.7
A one-pot biomimetic synthesis of (−)-angiopterlactone B and its enantiomer (+)-angiopterlactone B has been accomplished via TBAF-catalyzed tandem ring contraction followed by oxa-Michael/Michael addition sequence. Comparison of specific optical rotations, absolute configurations, and CD spectra of natural, synthesized (−)-angiopterlactone B and (+)-angiopterlactone B unequivocally proves that the
(2<i>S</i>,3<i>S</i>)-1-Phenylthio-2,3-butanediol. A Useful Chiral Building Block for a Simple Syntheses of (4<i>R</i>,5<i>S</i>)-5-Hydroxyhexan-4-olide and (4<i>R</i>,5<i>S</i>)-5-Hydroxy-2-hexen-4-olide
作者:Tamotsu Fujisawa、Eiji Kojima、Toshio Sato
DOI:10.1246/cl.1987.2227
日期:1987.11.5
(4R,5S)-5-Hydroxyhexan-4-olide and (4R,5S)-5-hydroxy-2-hexen-4-olide were easily synthesized from (2S,3S)-1-phenylthio-2,3-butanediol, obtained by the bakers’ yeast reduction of 1-phenylthio-2,3-butanedione.
Synthesis of furanone-Based natural product analogues with quorum sensing antagonist activity
作者:Thomas Hjelmgaard、Tobias Persson、Thomas B Rasmussen、Michael Givskov、John Nielsen
DOI:10.1016/s0968-0896(03)00295-5
日期:2003.7
The synthesis of 5- and 3-(1'-hydroxyalkyl)-substituted 5H-furan-2-ones 4a-d and 8a-d as well as 5-alkylidene-5H-furan-2-ones 5a-d is described. A study of the structure-activity relationship of these furanone-based natural product analogues towards two different quorum sensing systems is reported. Although the synthesized compounds are not as potent quorum sensing inhibitors as some natural counterparts and a synthetic analogue hereof, interesting structure-activity relationships are seen. (C) 2003 Elsevier Science Ltd. All rights reserved.
Regio- and diastereoselectivity in aldol reactions of cyclopent-2-enone, 2-(5H)furanone and their derived trimethylsilyloxydienes
作者:David W Brown、Malcolm M Campbell、Anthony P Taylor、Xiao-an Zhang