Preparation and application of medium-ring-containing tetrahydrocarboline-tetrahydroisoquinoline compound
A compound, C1-C6 technology, applied in the field of medicine, can solve the problems of anti-cancer drug toxicity and side effects, achieve the effect of perfecting the structure-activity relationship, facilitating the development, and enriching the compound library
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[0226] The following examples are given to describe the present invention in more detail, but the present invention is not limited to these examples.
[0227] Preparation of Compound 1-19
[0228] It can be prepared from the common precursor amine C by one-step acylation reaction, and the precursor amine C is prepared by multi-step reaction of tetrahydrocarboline intermediate A and carboxylic acid intermediate B. The preparation method of the carboxylic acid intermediate B can refer to the literature Liu, Z.Z.et al., Bioorg.Med.Chem.Lett.2006, 16, 1282.
[0229] 1. Preparation of tetrahydrocarboline intermediate A:
[0230]
[0231] a:SOCl 2 ,DCM,reflux; b:TMSCH 2 N 2 ,DCM; c:Silver benzoate,Na 2 CO 3 ,MeOH; d:DEA,DCM; e:BnOCH 2 CHO, TFA, CH 2 Cl 2 ; f:LiAlH 4 , THF; g: TBSCl, Imidazole, CH 2 Cl 2
[0232] Preparation of Intermediate A-1: Dissolve 5g of Fmoc-L-tryptophan in 60mL of dichloromethane, cool in an ice bath to 0°C, slowly add 0.85mL of thionyl chlo...
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