1369403-22-4Relevant articles and documents
New pulvinic acid and phenylalaninol derivatives from the mushrooms Retiboletus griseus and R. nigerrimus
Gruber, Gertraud,Kerschensteiner, Lydia,Marumoto, Ryuji,Steglich, Wolfgang
, p. 675 - 682 (2013)
The close genetic relationship of the mushrooms Retiboletus griseus and R. nigerrimus is supported by the occurrence of the orange-yellow retiboletic acid, resp. its methyl ester, in both species. The structures of these highly substituted pulvinic acid derivatives have been elucidated by spectroscopic investigations. R. nigerrimus also contains two N-protocatechuyl-L- phenylalaninol derivatives, nigerrimin A and B, the first reported occurrence of such compounds in nature. Their configuration was established by the synthesis of nigerrimin B.