64069-63-2Relevant articles and documents
6β-HYDROXYHYOSCYAMINE EPOXIDASE FROM CULTURED ROOTS OF HYOSCYAMUS NIGER
Hashimoto, T.,Kohno, J.,Yamada, Y.
, p. 1077 - 1082 (1989)
Enzyme preparations from cultured roots of Hyoscyamus niger converted 6β-hydroxyhyoscyamine to scopolamine in the presence of the co-factors required by 2-oxoglutarate-dependent dioxygenases, i.e. 2-oxoglutarate, ferrous ion and ascorbate.The epoxidase, a soluble enzyme, requires molecular oxygen for the reaction.Incubations with 6β-hydroxyhyoscyamine and 6β-hydroxyhyoscyamine as substrates demonstrated that the epoxidation reaction proceeds with retention of the 6β-hydroxy oxygen and with loss of the 7β-hydrogen.The epoxidase activity found under the optimal reaction conditions studied was considerably lower than the activity of hyoscyamine 6β-hydroxylase in cultured roots, and the two activities could not be separated during partial purification.The function of this epoxidase in scopolamine biosynthesis is discussed in relation to hyoscyamine 6β-hydroxylase. - Keywords: Hyoscyamus niger; Solanaceae; biosynthesis; tropane alkaloids; 6β-hydroxyhyoscyamine; scopolamine; epoxidase.
Buscopan labeled with carbon-14 and deuterium
Latli, Bachir,Stiasni, Michael,Hrapchak, Matt,Li, Zhibin,Grinberg, Nelu,Lee, Heewon,Busacca, Carl A.,Senanayake, Chris H.
, p. 557 - 564 (2016/11/23)
Hyosine butyl bromide, the active ingredient in Buscopan, is an anticholinergic and antimuscarinic drug used to treat pain and discomfort caused by abdominal cramps. A straightforward synthesis of carbon-14– and deuterium-labeled Buscopan was developed using scopolamine, n-butyl-1-14C bromide, and n-butyl-2H9 bromide, respectively. In a second carbon-14 synthesis, the radioactive carbon was incorporated in the tropic acid moiety to follow its metabolism. Herein, we describe the detailed preparations of carbon-14– and deuterium-labeled Buscopan.
Total Synthesis of (±)-Scopolamine: Challenges of the Tropane Ring
Nocquet, Pierre-Antoine,Opatz, Till
, p. 1156 - 1164 (2016/03/05)
Scopolamine was synthesized using 6,7-dehydrotropine as a key intermediate. Rhodium-catalyzed [4 + 3] cycloaddition chemistry and a modified Robinson-Sch?pf reaction were each independently evaluated for their utility in constructing the tropane core. Both synthetic approaches gave comparable overall yields.