68454-14-8Relevant articles and documents
Biocatalytic synthesis of novel partial esters of a bioactive dihydroxy 4-methylcoumarin by Rhizopus oryzae lipase (ROL)
Kumar, Vinod,Mathur, Divya,Srivastava, Smriti,Malhotra, Shashwat,Rana, Neha,Singh, Suraj K.,Singh, Brajendra K.,Prasad, Ashok K.,Varma, Anjani J.,Len, Christophe,Kuhad, Ramesh C.,Saxena, Rajendra K.,Parmar, Virinder S.
, (2016)
Highly regioselective acylation has been observed in 7,8-dihydroxy-4-methylcoumarin (DHMC) by the lipase from Rhizopus oryzae suspended in tetrahydrofuran (THF) at 45°C using six different acid anhydrides as acylating agents. The acylation occurred regioselectively at one of the two hydroxy groups of the coumarin moiety resulting in the formation of 8-acyloxy-7-hydroxy-4-methylcoumarins, which are important bioactive molecules for studying biotansformations in animals, and are otherwise very difficult to obtain by only chemical steps. Six monoacylated, monohydroxy 4-methylcoumarins have been biocatalytically synthesised and identified on the basis of their spectral data and X-ray crystal analysis.
COUMARIN COMPOUNDS AND THEIR USE FOR TREATING CANCER
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Page/Page column 35, (2009/12/27)
Coumarin compounds of formula (I): wherein R1, R2, R3, R4, R5, R6, and X are defined herein. Also disclosed is a method for treating cancer with coumarin compounds.