Efficient Syntheses of the Marine Alkaloids Makaluvamine D and Discorhabdin C: The 4,6,7-Trimethoxyindole Approach
摘要:
A new and efficient synthesis of the tricyclic quinonimine 20 as its trifluoroacetate 23 has been developed starting from the commercially available 2,4,5-trimethoxybenzaldehyde and proceeding via the hitherto unknown 4,6,7-trimethoxyindole (7). Quinonimine 23 is the late stage key intermediate in several previously reported syntheses of the biologically active pyrrolo[4,3,2-de]-quinoline marine alkaloids discorhabdin C (1) and makaluvamine D (3).
作者:Yvette A. Jackson、Adil D. Billimoria、Eyyani V. Sadanandan、Michael P. Cava
DOI:10.1021/jo00116a049
日期:1995.6
Novel and efficient synthesis of p-quinones in water via oxidative demethylation of phenol ethers using hypervalent iodine(III) reagents
作者:Hirofumi Tohma、Hironori Morioka、Yu Harayama、Miki Hashizume、Yasuyuki Kita
DOI:10.1016/s0040-4039(01)01407-1
日期:2001.9
A new method for preparing p-quinone derivatives from phenol ether derivatives in water using the hypervalent iodine(III) reagent, phenyliodine(III) bis(trifluoroacetate) (PIFA) was developed. The present reaction proceeds in good to excellent yields under mild reaction conditions. This oxidation is expected to be environmentally benign since it uses recyclable poly-bis(trifluoroacetoxyiodo)styrene
Efficient Syntheses of the Marine Alkaloids Makaluvamine D and Discorhabdin C: The 4,6,7-Trimethoxyindole Approach
作者:Eyyani V. Sadanandan、Sasi K. Pillai、M. V. Lakshmikantham、Adil D. Billimoria、J. Shane Culpepper、Michael P. Cava
DOI:10.1021/jo00111a043
日期:1995.3
A new and efficient synthesis of the tricyclic quinonimine 20 as its trifluoroacetate 23 has been developed starting from the commercially available 2,4,5-trimethoxybenzaldehyde and proceeding via the hitherto unknown 4,6,7-trimethoxyindole (7). Quinonimine 23 is the late stage key intermediate in several previously reported syntheses of the biologically active pyrrolo[4,3,2-de]-quinoline marine alkaloids discorhabdin C (1) and makaluvamine D (3).