Stereoselective synthesis of protected l- and d-dideoxysugars and analogues via Prins cyclisations† †Electronic supplementary information (ESI) available. See DOI: 10.1039/c5sc04144a Click here for additional data file.

Stereoselective synthesis of protected l- and d-dideoxysugars and analogues via Prins cyclisations.

A de novo approach for the rapid construction of orthogonally protected l- and d-deoxysugars and analogues is described. A novel and robust silicon-acetal undergoes Prins cyclisations with a series of homoallylic alcohols in high yield and excellent stereocontrol. Modified Tamao-Fleming oxidation of the resulting silyltetrahydropyrans gives direct access to deoxyglycoside analogues and the appr...

Rhodium(i)-catalyzed stereoselective [4+2] cycloaddition of oxetanols with alkynes through C(sp3)–C(sp3) bond cleavage† †Electronic supplementary information (ESI) available. CCDC 1512439 and 1512440. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c6sc05246k Click here for additional data file. Click here for additional data file.

Remote stereoselective deconjugation of α,β-unsaturated esters by simple amidation reactions† †Electronic supplementary information (ESI) available. CCDC 1034974, 1034976–1034978. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c5sc01118c Click here for additional data file. Click here for additional data file.

First total synthesis of concavine† †Electronic supplementary information (ESI) available. CCDC 1523963. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c6sc05627j Click here for additional data file. Click here for additional data file.

The synthesis of the unusual alkaloid concavine, isolated from Clitocybe concava (Basidiomycetae), has been accomplished. The synthetic route features regioand stereoselective manipulation of polycyclic imide intermediates via enolate substitution and Grignard addition, along with a key bridge-forming step involving a new method for sulfenylative radical cyclisation. The NMR data for synthetic ...

Versatile telluracycle synthesis via the sequential electrophilic telluration of C(sp2)–Zn and C(sp2)–H bonds† †Electronic supplementary information (ESI) available. CCDC 1523262–1523264. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c7sc01162h Click here for additional data file. Click here for additional data file.