• Bulletin of the Korean Chemical Society
• /
• v.28 no.4
• /
• pp.624-628
• /
• 2007

Synthesis of 4-substituted 3-exo-methylenechroman derivatives was carried out by the n-Bu3SnH-mediated vinyl radical cyclization as the key step starting from various salicylaldehydes.

• Bulletin of the Korean Chemical Society
• /
• v.33 no.12
• /
• pp.4150-4154
• /
• 2012

Efficient synthesis of ${\alpha}$-chloroenones bearing ${\beta}$-carbonates or ${\beta}$-carbamates was achieved by rhodium(II)-catalyzed reaction of cyclic diazodicarbonyl compounds with a variety of chloroformates or carbamyl chlorides in good yields. These reactions provided a useful and rapid route to ${\beta}$-substituted ${\alpha}$-haloenones.

• Proceedings of the PSK Conference
• /
• 2003.04a
• /
• pp.251.2-251.2
• /
• 2003

The 2,3-trimethylene-4(3H)-quinazolinone and 2,3-tetramethylene-4(3H)-quinazolinone are not the only alkaloids isolated from plants. but are the part of a family of intriguing alkaloids including the bronchodilator vasicinone, anti-endotoxic isaindigotone, cytotoxic luotonins, antibiotic tryptanthrin, and antiinflammatory rutacearpine as well as related alkaloids. (omitted)

• Bulletin of the Korean Chemical Society
• /
• v.31 no.3
• /
• pp.700-703
• /
• 2010

• Bulletin of the Korean Chemical Society
• /
• v.33 no.2
• /
• pp.377-378
• /
• 2012

• Bulletin of the Korean Chemical Society
• /
• v.32 no.spc8
• /
• pp.2949-2954
• /
• 2011

This paper describes a concise and efficient synthetic route for the biologically interesting pyranoxanthones, dihydropyranoxanthones, and their derivatives. The key strategies involve pyranyl ring formation, methylation, catalytic hydrogenation, and catalytic dihydroxylation starting from 1,3-dihydroxyxanthen-9-one.

• Bulletin of the Korean Chemical Society
• /
• v.33 no.10
• /
• pp.3489-3492
• /
• 2012

• Bulletin of the Korean Chemical Society
• /
• v.32 no.5
• /
• pp.1748-1750
• /
• 2011

• Bulletin of the Korean Chemical Society
• /
• v.33 no.8
• /
• pp.2799-2802
• /
• 2012

• Bulletin of the Korean Chemical Society
• /
• v.29 no.6
• /
• pp.1099-1100
• /
• 2008