Coumarin-4-ylmethoxycarbonyls as Phototriggers for Alcohols and Phenols
作者:Akinobu Z. Suzuki、Takayoshi Watanabe、Mika Kawamoto、Keiko Nishiyama、Hirotaka Yamashita、Megumi Ishii、Michiko Iwamura、Toshiaki Furuta
DOI:10.1021/ol0359362
日期:2003.12.1
[GRAPHICS]Caged compounds can be used to regulate the spatial and temporal dynamics of signaling molecules in live cells. Photochemical properties of coumarin-4-ylmethoxy carbonates (1a-d) are investigated to construct caged compounds of hydroxy-containing molecules. All the compounds possess desired properties as phototriggers for alcohols and phenols. The 6-bromo-7-hydroxycoumarin-4-ylmethoxycarbonyl (Bhcmoc) group has the highest photochemical efficiency and is applied to make caged compounds of 1,2-dioctanoylglycerol (diC(8)), Tyr-OMe, and adenosine.
Anthraquinon-2-ylmethoxycarbonyl (Aqmoc): A New Photochemically Removable Protecting Group for Alcohols
作者:Toshiaki Furuta、Yuuki Hirayama、Michiko Iwamura
DOI:10.1021/ol015787s
日期:2001.6.1
[see structure]. Synthesis and photochemistry of a new photochemically removable protecting group for alcohols is described. Four carbonates of galactose derivatives (1-4) were synthesized from the corresponding arylmethanols via 4-nitrophenyl carbonate intermediates. Among them, photolysis of anthraquinon-2-ylmethoxycarbonyl (Aqmoc) galactose (1) proceeded with overall photolysis efficiency of 150