82583-95-7Relevant articles and documents
Synthesis and in-vitro anti-hepatitis-B virus activity of 6H-[1]benzothiopyrano[4,3-b] quinolin-10-ols
Jia, Wei,Zhao, Yanfang,Li, Rongdong,Wu, Yanjiao,Li, Zebiao,Gong, Ping
scheme or table, p. 507 - 512 (2009/12/06)
A series of 9-methoxy-6H-[1]benzothiopyrano[4,3-b]quinolin-10-ols with a Mannich side chain were synthesized and evaluated for their anti-Hepatitis B virus (HBV) activity in HepG2.2.15 cells. Some compounds showed significant anti-HBV activity with IC50 values less than 41 μM. Among them, compound 9b was the most effective anti-HBV agent (IC50 = 1.7 μM, SI = 60.3).
Cleavage of the Methylenedioxy Ring. III. Cleavage with Sodium Benzyloxide in Dimethyl Sulfoxide
Kobayashi, Shigeru,Okimoto, Kazuto,Imakura, Yasuhiro
, p. 1567 - 1573 (2007/10/02)
Cleavage of the methylenedioxy ring in aromatic formyl (1-3), nitro (4 and 5), and acetyl (30) compounds with N-sodium benzyloxide-benzyl alcohol in dimethyl sulfoxide gave 3-hydroxybenzene derivatives (19, 22-24, 26, 27, and 33).In the case of the acetyl compound 30, the 4-hydroxybenzene derivative (34) was also obtained as a minor product.Regioselective cleavage of the ring in aromatic compounds having electronwithdrawing groups with nucleophilic oxide anions is discussed.Cleavage of the ring in 1-5 and 30 with 2 N sodium methoxide in dimethyl sulfoxide-dimethylformamide was found to be useful for the practical preparation of 3-hydroxybenzene derivatives (6-10 and 31).Keywords - Cleavage of methylenedioxy ring; regioselectivity; piperonals; 3,4-methylenedioxy-nitrobenzene; 3,4-methylenedioxy-acetophenone; sodium methoxide; sodium phenoxide; sodium benzyloxide; dimethyl sulfoxide; dimethylformamide