Total Synthesis of Hydroxy-α- and Hydroxy-β-sanshool Using Suzuki–Miyaura Coupling
作者:Yasushi Igarashi、Katsuyuki Aoki、Hiroaki Nishimura、Isao Morishita、Kimitoshi Usui
DOI:10.1248/cpb.c12-00382
日期:——
Here, we describe the first total synthesis of hydroxyl-α- and hydroxyl-β-sanshool, which involves Suzuki–Miyaura coupling (SMC). Hydroxy-α-sanshool (1) was synthesized by SMC of bromoalkyne 4 with boronate 3 followed by (Z)-selective reduction of the triple bond in the coupling product. Hydroxy-β-sanshool (2) was synthesized by regio- and (E)-selective conversion of 4 to iodoalkene 11 followed by SMC with 3.
在这里,我们描述了羟基-α-和羟基-β-山舒尔的首次全合成,其中涉及到铃木-宫浦偶联(SMC)。羟基-α-山舒尔(1)是由溴炔 4 与硼酸 3 通过 SMC 合成的,然后对偶联产物中的三键进行了 (Z) 选择性还原。羟基-β-山舒尔(2)是通过 4 与碘烃 11 的区域和(E)选择性转化,然后与 3 进行 SMC 合成的。