A new diterpenoid alkaloid, hemsleyanaine (1), was isolated from the roots of Aconitum hemsleyanum Pritz.Its structure was elucidated as 8 acetyl 14 benzoyl ezochasmanine on the basis of chemical and spectral evidence...A new diterpenoid alkaloid, hemsleyanaine (1), was isolated from the roots of Aconitum hemsleyanum Pritz.Its structure was elucidated as 8 acetyl 14 benzoyl ezochasmanine on the basis of chemical and spectral evidence.Together with this new compound there known diterpenoid alkaloids, chasmanine (2), indaconitine (3) and talatisamine (4), were isolated and identified.展开更多
Two new norditerpenoid alkaloids, orthocentrine (1) and deacetylswinanine A (2), together with a known alkaloid, swinanine A (3), were isolated from the whole plants of Delphinium orthocentrum Franch. The structures o...Two new norditerpenoid alkaloids, orthocentrine (1) and deacetylswinanine A (2), together with a known alkaloid, swinanine A (3), were isolated from the whole plants of Delphinium orthocentrum Franch. The structures of the new alkaloids (1 and 2) were elucidated as 7,10_dihydroxy_8,14,16_trimethoxy_19,20_didehydro_aconitane (7β,8β,14α,16β) (1) and 20_ethyl_2,3_didehydro_6,10_dihydroxy_7,8_methylenedioxy_1,14,16_trimethoxy_aconitane (1α,6β,14α,16β) (2) by spectroscopic evidence and chemical transformation.展开更多
文摘A new diterpenoid alkaloid, hemsleyanaine (1), was isolated from the roots of Aconitum hemsleyanum Pritz.Its structure was elucidated as 8 acetyl 14 benzoyl ezochasmanine on the basis of chemical and spectral evidence.Together with this new compound there known diterpenoid alkaloids, chasmanine (2), indaconitine (3) and talatisamine (4), were isolated and identified.
文摘Two new norditerpenoid alkaloids, orthocentrine (1) and deacetylswinanine A (2), together with a known alkaloid, swinanine A (3), were isolated from the whole plants of Delphinium orthocentrum Franch. The structures of the new alkaloids (1 and 2) were elucidated as 7,10_dihydroxy_8,14,16_trimethoxy_19,20_didehydro_aconitane (7β,8β,14α,16β) (1) and 20_ethyl_2,3_didehydro_6,10_dihydroxy_7,8_methylenedioxy_1,14,16_trimethoxy_aconitane (1α,6β,14α,16β) (2) by spectroscopic evidence and chemical transformation.