A metal‐free, one‐potsynthesis of 1,2‐naphthoquinone was accomplished from 2‐naphthol by utilizing economically cheap NBS under open air conditions. Initial formation of 1,1‐dibromonaphthalen‐2‐one and subsequent transformation afforded the 1,2‐naphthoquinone. This oxidation was completed within 30 min and had broad substrate scope. Moreover, this system tolerated heterocyclic systems and was also
Synthesis and PTP1B inhibition of 1,2-naphthoquinone derivatives as potent anti-diabetic agents
作者:Jin Hee Ahn、Sung Yun Cho、Jae Du Ha、So Young Chu、Sun Ho Jung、Yoon Sung Jung、Ji Yoen Baek、In Kyung Choi、Eun Young Shin、Seung Kyu Kang、Sung Soo Kim、Hyae Gyeong Cheon、Sung-Don Yang、Joong-Kwon Choi
DOI:10.1016/s0960-894x(02)00331-1
日期:2002.8
A new series of 1,2-naphthoquinonederivatives was synthesized by various synthetic methods and evaluated for their ability to inhibit protein tyrosine phosphatase 1B (PTP1B). 1,2-Naphthoquinonederivatives with substituent at R(4) position showed submicromolar inhibitory activity, and compound 24 demonstrated 10- to 60-fold selectivity against the tested phosphatases. Also, several 4-aryl-1,2-naphthoquinone
Copper-catalyzed divergent oxidative pathways of 2-naphthol derivatives: ortho-naphthoquinones versus 2-BINOLs
作者:H. Y. Kim、S. Takizawa、K. Oh
DOI:10.1039/c6ob01183g
日期:——
aerobic oxidation of 2-naphthol derivatives to ortho-naphthoquinones whereas switching the catalyst system to Cu(OAc)2–DBN under an argon atmosphere allows the oxidative coupling of 2-naphthols to 1,1′-bi-2-naphthols (BINOLs) in good to excellent yields.