13895-92-6Relevant articles and documents
COUMARIN SULPHATES OF SESELI LIBANOTIS
Lemmich, John,Shabana, Marawan
, p. 863 - 866 (1984)
Three new sulphate ester salts derived from known coumarin alcohols - one of them tertiary - have been obtained from roots of Seseli libanotis subsp. eu-libanotis.Their structures were established as (2'S)-rutaretin-1''-sulphate, (3'R)-lomatin-3'-sulphate and (3'R,4'R)-khellactone-3'-sulphate.They were together with their parent alcohols characterized by 13C NMR spectroscopy.It is the first report on coumarin sulphates in plants.Key Word Index - Seseli libanotis subsp. eu-libanotis; Umbelliferae; dihydrofurocoumarins; dihydropyranocoumarins; coumarin sulphates; sulphate ester salts; FDMS; 13C NMR.
Natural Product Chemistry. Part 181. Investigations on the Synthesis of Dihydropyrano- and Dihydrofurano-coumarins by Application of Catalytic Enantioselective cis-Dihydroxylation
Reisch, Johannes,Voerste, Arnd A. W.
, p. 3251 - 3256 (2007/10/02)
As part of a study on the applicability of catalytic enantioselective cis-dihydroxylation for the synthesis of dihydropyrano- and dihydrofurano-anellated coumarins new routes to (-)-cis-khellactone 1b, (-)-trans-khellactone 1c and rutaretin 4 have been developed.