Studies on Inhibitory Activity against Acetylcholinesterase of New Bisbenzylisoquinoline Alkaloid and Its Related Compounds
摘要:
A new phenolic bisbenzylisoquinoline (BBI) alkaloid named 2'-N-norfangchinoline was isolated from the root of Stephania tetrandra S. MOORE along withfangchinoline (2) and atherospermoline (3). The chemical structure of 2'-N-norfangchinoline was proved to be 4 by spectral analyses and chemical methods. Moreover three phenolic BBI alkaloidal compounds, 2,2'-N,N-dinorfangchinoline (8), 2'-N-noratherospermoline (9), 2-N-norfangchinoline (10) were derived from tetrandrine (1). And 12-O-acetyl atherospermoline (11) was obtained by partial acetylation of atherospermoline (3). Seven phenolic BBI compounds (2, 3, 4, 8, 9, 10, and 11) also have the inhibitory effect on acetylcholinesterase.
Studies on Inhibitory Activity against Acetylcholinesterase of New Bisbenzylisoquinoline Alkaloid and Its Related Compounds
摘要:
A new phenolic bisbenzylisoquinoline (BBI) alkaloid named 2'-N-norfangchinoline was isolated from the root of Stephania tetrandra S. MOORE along withfangchinoline (2) and atherospermoline (3). The chemical structure of 2'-N-norfangchinoline was proved to be 4 by spectral analyses and chemical methods. Moreover three phenolic BBI alkaloidal compounds, 2,2'-N,N-dinorfangchinoline (8), 2'-N-noratherospermoline (9), 2-N-norfangchinoline (10) were derived from tetrandrine (1). And 12-O-acetyl atherospermoline (11) was obtained by partial acetylation of atherospermoline (3). Seven phenolic BBI compounds (2, 3, 4, 8, 9, 10, and 11) also have the inhibitory effect on acetylcholinesterase.
A new phenolic bisbenzylisoquinoline (BBI) alkaloid named 2'-N-norfangchinoline was isolated from the root of Stephania tetrandra S. MOORE along withfangchinoline (2) and atherospermoline (3). The chemical structure of 2'-N-norfangchinoline was proved to be 4 by spectral analyses and chemical methods. Moreover three phenolic BBI alkaloidal compounds, 2,2'-N,N-dinorfangchinoline (8), 2'-N-noratherospermoline (9), 2-N-norfangchinoline (10) were derived from tetrandrine (1). And 12-O-acetyl atherospermoline (11) was obtained by partial acetylation of atherospermoline (3). Seven phenolic BBI compounds (2, 3, 4, 8, 9, 10, and 11) also have the inhibitory effect on acetylcholinesterase.