Abstract
From the stem bark of ALSTONIA ANGUSTIFOLIA, eleven alkaloids were isolated. Seven of them are known ones: echitamine ( 1), N(b)-demethylechitamine ( 2), pseudoakuammigine ( 3), tubotaiwine ( 5), akuammicine ( 6), N(b)-beta-methylantirhine ( 12), and N(b)-methylakuammidine ( 13). The four others, pseudoakuammigine N-oxide ( 4), akuammicine N-oxide ( 7), N(b)-demethylalstogustine ( 8), and N(b)-demethylalstogustine N-oxide ( 11), are new alkaloids. Their structures were determined by means of spectroscopic analysis and chemical correlation with known alkaloids.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
