Yamashita M, Ohta N, Kawasaki I, Ohta S
Kyoto Pharmaceutical University, Misasagi-Nakauchicho 5, Yamashinaku, Kyoto 607-8414, Japan.
Org Lett. 2001 May 3;3(9):1359-62. doi: 10.1021/ol0157398.
[reaction in text] The first total synthesis of (+/-)-linderol A, a hexahydrodibenzofuran isolated from Lindera umbellata bark, with potent inhibitory activity on melanin biosynthesis of cultured B-16 melanoma cells was achieved via a 20-step of reaction in 7.64% overall yield starting from 4,6-dimethoxysalicylaldehyde.
[文本中的反应] 从山胡椒树皮中分离得到的具有六氢二苯并呋喃结构的(±)-乌药醇A的首次全合成得以实现,该化合物对培养的B-16黑色素瘤细胞的黑色素生物合成具有强效抑制活性,其合成从4,6-二甲氧基水杨醛开始,经过20步反应,总产率为7.64%。