82597-81-7Relevant academic research and scientific papers
Simple total syntheses of (-)-ergot alkaloids and their (+)-enantiomers by a common synthesis method utilizing optical resolution
Somei, Masanori,Nakagawa, Kyoko
, p. 1263 - 1266 (2007/10/03)
The first and simple total syntheses of (-)-isochanoclavine-1 ((-)-1b), (-)-agroclavine ((-)-3), (-)-agroclavine-1 ((-)-4), and (-)-norchanoclavine-1 ((-)-5c) and their (+)-enantiomers are achieved from indole-3-carboxaldehyde (8) by a common synthesis method utilizing optical resolution. Absolute configuration of (-)-agroclavine-1 is determined to be 5R and 10S for the first time. Preparations of both enantiomers of chanoclavine-1 (1c) are also included.
SHORT-STEP SYNTHESIS OF THE ERGOT ALKALOIDS, (+/-)-NORCHANOCLAVINE-I, (+/-)-CHANOCLAVINE-I, (+/-)-ISOCHANOCLAVINE-I, and (+/-)-AGROCLAVINE
Somei, Masanori,Makita, Yoshihiko,Yamada, Fumio
, p. 948 - 950 (2007/10/02)
The simple total synthesis of the ergot alkaloids, (+/-)-norchanoclavine-I, (+/-)-chanoclavine-I, (+/-)-isochanoclavine-I, and (+/-)-agroclavine was achieved by a practical and common synthesis method.A new regio-selective oxidation of the Z-methyl group of the isoprenyl system with selenium dioxide is described.Keywords - (+/-)-norchanoclavine-I; (+/-)-norisochanoclavine-I; (+/-)-chanoclavine-I; (+/-)-isochanoclavine-I; (+/-)-agroclavine; ergot alkaloid; total synthesis; common synthesis method; new oxidation
A TOTAL SYNTHESIS OF (+/-)-LYSERGENE AND (+/-)-AGROCLAVINE
Kiguchi, Toshiko,Hashimoto, Chiyomi,Ninomiya, Ichiya
, p. 43 - 47 (2007/10/02)
A preliminary study on the exploitation of a general synthetic route to the ergoline group of alkaloids on the despyrrole analogs was succesfully extended to the first total synthesis of racemic lysergene and agroclavine via the route involving reductive photocyclization of the furylenamide (10) followed by ring opening of the resulting dihydrofuran ring (11).
