Isoquinoline Synthesis by Heterocyclization of Tosylmethyl Isocyanide Derivatives: Total Synthesis of Mansouramycin B
作者:Anna Coppola、David Sucunza、Carolina Burgos、Juan J. Vaquero
DOI:10.1021/ol5032624
日期:2015.1.2
A new method for the synthesis of isoquinolines through a catalytic acid-mediated cyclization of α-benzyl TosMIC derivatives has been developed. This methodology has been successfully applied to the totalsynthesis of mansouramycin B. This is the first totalsynthesis of this compound to be reported in the literature.
作者:Yi Zhang、Xiaoxin Shi、Tianzhuo Meng、Qiqi Fan、Xia Lu
DOI:10.1002/cjoc.201600020
日期:2016.7
A novel totalsynthesis of Mansouramycin B (1) was performed via 10 steps in 28% overall yield starting from the readily available and cheap salicylaldehyde. Two key steps of this totalsynthesis are noteworthy. The first one is base‐promoted one‐pot aerobic aromatization of N‐tosyltetrahydroisoquinoline 6, the second one is oxidation of 5‐hydroxy‐3‐methyl‐isoquinoline 8 with iodobenzene diacetate