90243-11-1

Upstream product

• 120-14-9 3,4-dimethoxy-benzaldehyde 

Downstream Products

• 23367-76-2 2-(3,4-Dimethoxyphenyl)-1,6,7,8,9,9a-hexahydro-3-(4-methoxyphenyl)-4H-quinolizin-4-one 
• 23367-75-1 1-(3,4-Dimethoxyphenyl)-2-<1-<(4-methoxyphenyl)acetyl>piperidin-2-yl>ethanone 
• 23365-39-1 2-(3,4-dimethoxyphenyl)-3-(4-methoxyphenyl)-1,6,7,8,9,9a-hexahydro-4H-quinolizin-4-one 
• 79228-19-6 2-<2-(3,4-Dimethoxyphenyl)-2-hydroxyethyl>-1-<(4-methoxyphenyl)acetyl>piperidine 
• 90171-75-8 (4-Methoxy-phenyl)-acetic acid (S)-1-(3,4-dimethoxy-phenyl)-2-{(R)-1-[2-(4-methoxy-phenyl)-acetyl]-piperidin-2-yl}-ethyl ester 

Relevant academic research and scientific papers

General Synthesis of Phenanthroindolizidine, Phenanthroquinolizidine, and Related Alkaloids: Preparation of (+/-)-Tylophorine, (+/-)-Cryptopleurine, (+/-)-Septicine, and (+/-)-Julandine

A general synthetic route to the pentacyclic phenanthro class and related indolizidine and quinolizidine alkaloids via β-amino ketone intermediates is reported.The synthesis of tylophorine, cryptopleurine, septicine, and julandine, in racemic forms, has been described.Synthetic steps in the preparation of these alkaloids involve 1,3-dipolar cycloadditions of the cyclic nitrones as a common feature followed by crucial ring closure by aldol reactions and photolyses.