반응 #816415

반응 방정식

KNO3

1,2,3,4-tetrahydroisoquinoline

→

7-nitrotetrahydroisoquinoline

수율 50.0%

용매

sulfuric acid

반응 조건

후처리

1. 1
   기타in good yield (about 90%)
2. 2
   기타reaction Scheme 4 according to the report by Tercel et al. (1996)

실험 절차

This example shows how to make example compounds of the present invention. More specifically, this example demonstrates how to make four aromatic nitro isomers of 6-position nitro-1,2,3,4-tetrahydroisoquinolinylpurine ribosides NBMPR analogues (compounds 2-5). Several literature methods are employed to synthesize the required nitro-1,2,3,4-tetrahydroisoquinoline (compounds 6-9), which are subsequently reacted with the commercially available 6-chloropurine riboside (10) according to Scheme 1 to obtain the target compounds. The commercially available 5-nitroisoquinoline (11) is reduced using sodium borohydride in ethanol to afford the 5-tetrahydroisoquinoline (6) intermediate in good yield (about 90%). The 7-nitrotetrahydroisoquinoline intermediate (8) is prepared in about 50% yield by nitration of the commercially available 1,2,3,4-tetrahydroisoquinoline using KNO3 in concentrated sulfuric acid according to the method of Ajao et al. (1985) (Scheme 3). The 6- and 8-nitro-1,2,3,4-tetrahydroisoquinoline intermediates 7 and 9, are prepared following reaction Scheme 4 according to the report by Tercel et al. (1996) as follows.

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