Research / 2018 / Article / Sch 4

Research Article

(−)- and (+)-Securidanes A and B, Natural Triarylmethane Enantiomers: Structure and Bioinspired Total Synthesis

Scheme 4

Synthesis of 6a, (i) H2SO4, MeOH, rt, 92%; (ii) AcOH, Hg(OAc)2, reflux, 7 h, 60%; (iii) CH3OCH2Cl, NaH, THF, 0°C to rt, 98%.