13756-98-4Relevant academic research and scientific papers
8'- and 9'-Methoxyabscisic Acids as Antimetabolic Analogs of Abscisic Acid
Todoroki, Yasushi,Hirai, Nobuhiro,Koshimizu, Koichi
, p. 707 - 715 (2007/10/02)
8'- and 9'-Methoxyabscisic acids (methoxy-ABAs) were synthesized as antimetabolic analogs of abscisic acid (ABA).The racemic mixtures were resolved by HPLC. (+)-8'-Methoxy-ABA inhibited the elongation of rice seedling four times more strongly than (+)-ABA did, and (+)-9'-methoxy-ABA inhibited the germination of lettuce seeds and the induction of α-amylase by gibberellin A3 in barley seeds seven and two times more strongly, respectively.These methoxy-ABAs are the first analogs reported to have higher activity than ABA. (+)-8'- and (+)-9'-Methoxy-ABAs were less active in causing stomatal closure than (+)-ABA.These biological activities and 1H-NMR analysis suggest that the activity of methoxy-ABAs involved delayed metabolism, as was expected.The activity of (-)-isomers of ABA and methoxy-ABAs was also tested.
Total Synthesis of (+)-Perrottetianal A
Hagiwara, Hisahiro,Uda, Hisashi
, p. 1901 - 1908 (2007/10/02)
The total synthesis of (+)-perrottetianal A, one of the sacculatane-type diterpenes isolated from liverworts, has been achieved starting from an optically active Wieland-Miescher ketone analogue.The ethylene glycol monoacetal of the starting material was
