Synthesis of thiochromans by means of a (4++2) polar cycloaddition of m-tolylthiomethyl chloride with substituted alkenes: A simple synthesis of (.+-.)-cuparene and related sesquiterpenoids.
作者:Hiroshi NAKATANI、Taru Su SO、Hiroyuki ISHIBASHI、Masazumi IKEDA
DOI:10.1248/cpb.38.1233
日期:——
(±)-Cuparene, (±)-α-cuparenone, and (±)-tochuinyl acetate were synthesized from m-tolylthiomethyl chloride by using a Lewis acid-mediated [4++2] polar cycloaddition with substituted cyclopentenes as a key step.
(±)-Cuparene、(±)-α-cuparenone和(±)-tochuinyl acetate是通过使用Lewis酸介导的[4+2]极性环加成反应,以取代的环戊烯为关键步骤,从m-tolylthiomethyl chloride合成的。