O-Methylasparvenone, a nitrogen-free serotonin antagonist
摘要:
O-Methylasparvenone (1) and asparvenone (2) were isolated from an Aspergillus parvulus Smith broth in a microbial screening for 5-HT2C ligands and found to be 5-HT2C antagonists. They represent the first nitrogen-free serotonin ligands. The absolute configuration of 1 was determined to be S by X-ray analysis of the corresponding Mosher-ester. A short and efficient synthesis of rac-1 was developed. This protocol was applied to the synthesis of derivatives of 1 and a structure-affinity relationship was established. (C) 1997 Elsevier Science Ltd.
O-Methylasparvenone, a nitrogen-free serotonin antagonist
作者:Michael Bös、Rolf Canesso、Noriko Inoue-Ohga、Atsuko Nakano、Yuki Takehana、Andrew J. Sleight
DOI:10.1016/s0968-0896(97)00160-0
日期:1997.12
O-Methylasparvenone (1) and asparvenone (2) were isolated from an Aspergillus parvulus Smith broth in a microbial screening for 5-HT2C ligands and found to be 5-HT2C antagonists. They represent the first nitrogen-free serotonin ligands. The absolute configuration of 1 was determined to be S by X-ray analysis of the corresponding Mosher-ester. A short and efficient synthesis of rac-1 was developed. This protocol was applied to the synthesis of derivatives of 1 and a structure-affinity relationship was established. (C) 1997 Elsevier Science Ltd.
Asymmetric total synthesis of (+)-O-methylasparvenone, a rare nitrogen-free serotonin 2C receptor antagonist
作者:Raphaël Lafleur-Lambert、John Boukouvalas
DOI:10.1039/c6ob01678b
日期:——
The first enantioselective synthesis of the fungal metabolite (+)-O-methylasparvenone was achieved in eight steps and 22% overall yield from inexpensive 3,4,5-trimethoxybenzaldehyde dimethyl acetal. Key steps include (i) early-stage asymmetricalkynylation of an aromatic aldehyde with a propiolate, (ii) intramolecular Friedel–Crafts acylation, and (iii) site-selective cleavage of an aryl methyl ether