Synthesis of 3-amino-3-vinylpropanoic acid and its conversion to 4-amino-5-hydroxy-4,5-dihydrofuran-2-one hydrochloride (HAD), a cyclic stabilised form of aspartate 1-semialdehyde hydrochloride
摘要:
3-Amino-3-vinylpropanoic acid hydrochloride 4 was obtained from 4-acetoxyazetidin-2-one 1 in 3 steps. The ozonolysis of 4 yielded 3-amino-4-oxopropanoic acid hydrochloride (aspartate 1-semialdehyde hydrochloride 6). This labile alpha-aminoaldehyde is isolated in its stable cyclic form, 4-amino-5-hydroxy-4,5-dihydrofuran-2-one hydrochloride 7. (C) 1997 Elsevier Science Ltd.
Novel .alpha.-ethynyl- and .alpha.-vinyl 3,4-disubstituted phenylalanines are disclosed. The compounds have pharmaceutical activity.
本发明揭示了α-乙炔基和α-乙烯基3,4-二取代苯丙氨酸。这些化合物具有药物活性。
Use of certain acetylene-substituted amino-acid compounds for
申请人:——
公开号:US04582529A1
公开(公告)日:1986-04-15
Growth of unwanted plants is controlled by certain acetylene-substituted aminocarboxylic acid compounds.
某些乙炔取代的氨基羧酸化合物可以控制不需要的植物生长。
Conformationally restricted analogs of the muscarinic agent N-methyl-N-(1-methyl-4-pyrrolidino-2-butynyl)acetamide
作者:J. R. Michael Lundkvist、Bjorn Ringdahl、Uli Hacksell
DOI:10.1021/jm00124a022
日期:1989.4
Conformationally restricted analogues of the selective partial muscarinic agonist N-methyl-N-(1-methyl-4-pyrrolidino-2-butynyl)acetamide (BM 5; 2) were synthesized. The compounds were tested for muscarinic and antimuscarinic activity in the isolated guinea pig ileum and in intact mice. They were found to be moderately potent muscarinic antagonists or weak partial agonists. The new compounds were less potent than 2 in inhibiting (-)-[3H]-N-methylscopolamine binding in the rate cerebral cortex. Thus, structural modifications of 2 in which part of the amide moiety has been connected with the methyl group in the butynyl chain to form a five-membered ring decrease affinity and in most cases abolish efficacy.
Regiospecific 1,4 addition of a propargylic anion. A general synthon for 2-substituted propargylamines as potential catalytic irreversible enzyme inhibitors.
作者:Brian W. Metcalf、Patrick Casara
DOI:10.1016/s0040-4039(00)91443-6
日期:1975.1
Catalytic irreversible inhibition of mammalian ornithine decarboxylase (E.C.4.1.1.17) by substrate and product analogs
作者:B. W. Metcalf、P. Bey、C. Danzin、M. J. Jung、P. Casara、J. P. Vevert