Chiral α-substituted allylboronates in a one-pot three-component asymmetric allylic alkylation/carbonyl allylation reaction sequence — Applications to the syntheses of (+)-(3R,5R)-3-hydroxy-5-decanolide and (–)-massoialactone
Organocatalytic Enantioselective Approach to the Synthesis of Verbalactone and (R)-Massoialactone
作者:Pradeep Kumar、Anand Harbindu
DOI:10.1055/s-0030-1260051
日期:2011.6
The organocatalytic enantioselective synthesis of verbalactone and (R)-massoialactone is described. The requisite stereogenic centers of the target molecules were constructed using l-proline-catalyzed α-aminoxylation and Horner-Wadsworth-Emmons (HWE) olefination. Yamaguchi macrolactonization and ring-closing metathesis were employed as key steps in the syntheses.
A facile approach towards synthesis of verbalactone and biologically active δ-lactones using d-glucose
作者:Ashish Garg、Vinod K. Singh
DOI:10.1016/j.tet.2009.08.054
日期:2009.10
A general synthetic approach has been developed for the asymmetric synthesis of chiral δ-lactones and verbalactone using d-glucose. The key intermediate used in this approach was α-diazoketone.
A concise stereoselective total synthesis of verbalactone
作者:Mahesh Madala、Balamurali Raman、K. V. Sastry、Sridhar Musulla
DOI:10.1007/s00706-016-1682-1
日期:2016.11
AbstractA stereoselectivetotalsynthesis of macrodilactone, verbalactone is reported. The strategy utilizes an iterative Jacobsen hydrolytic kinetic resolution, nucleophilic ring opening, and macrolactonisation under Yamaguchi reaction conditions as the key steps. Graphical abstract
A stereoselectivetotalsynthesis of verbalactone has been achieved starting from commercially available hexanal. The sequence involves Maruoka allylation, diastereoselective iodine‐induced electrophillic cyclization, ring opening of epoxide, and Yamaguchi macrolactonization as the key steps.
A simple and efficient synthesis of Verbalactone has been accomplished from inexpensive and commercially available starting material, hexanal. This concise synthesis utilizes stereoselective reduction of β–hydroxyketone using catecholborane, regioselective opening of epoxide and Yamaguchi reaction for the construction of the macrolactone.