676334-81-9

Upstream product

• 5321-49-3 4-(phenethyl)piperazine 
• 132994-16-2 4-chloro-5,6-tetramethylene-7-cyanopyrrolo<3,2-d>pyrimidin-4-one 
• 132994-04-8 ethyl 2-amino-1-cyano-5,6,7,8-tetrahydroindolizine-3-carboxylate 
• 132994-09-3 3,4-dihydro-5,6-tetramethylene-7-cyanopyrrolo<3,2-d>pyrimidin-4-one 
• 675-20-7 piperidin-2-one 
• 5693-62-9 2,3,4,5-tetrahydro-6-methoxypyridine 
• 78807-02-0 2-dicyanomethylidene-2,3,4,5-tetrahydro-1H,6H-pyridine 

Downstream Products

• 731825-99-3 C₂₃H₂₇N₅O 
• 731824-24-1 cyclopentyl-[4-(4-phenethyl-piperazin-1-yl)-5,6,7,8-tetrahydro-1,3,4b-triaza-fluoren-9-yl]-methanone 
• 731824-53-6 N-hydroxy-4-(4-phenethyl-piperazin-1-yl)-5,6,7,8-tetrahydro-1,3,4b-triaza-fluorene-9-carboxamidine 
• 731824-53-6 N-hydroxy-4-(4-phenethylpiperazin-1-yl)-5,6,7,8-tetrahydro-1,3,4b-triazafluorene-9-carboxamidine 
• 676335-32-3 4-(4-phenethylpiperazin-1-yl)-5,6,7,8-tetrahydro-1,3,4b-triazafluorene-9-carbothioic acid amide 
• 731824-55-8 4-(4-phenethylpiperazin-1-yl)-5,6,7,8-tetrahydro-1,3,4b-triazafluorene-9-carboxylic acid amide 

Relevant academic research and scientific papers

Pyrrolopyrimidine Derivatives as Novel Inhibitors of Multidrug Resistance-Associated Protein 1 (MRP1, ABCC1)

Five series of pyrrolo[3,2-d]pyrimidines were synthesized and evaluated with respect to potency and selectivity toward multidrug resistance-associated protein 1 (MRP1, ABCC1). This transport protein is a major target to overcome multidrug resistance in cancer patients. We investigated differently substituted pyrrolopyrimidines using the doxorubicin selected and MRP1 overexpressing small cell lung cancer cell line H69 AR in a calcein AM and daunorubicin cell accumulation assay. New compounds with high potency and selectivity were identified. Piperazine residues at position 4 bearing large phenylalkyl side chains proved to be beneficial for MRP1 inhibition. Its replacement by an amino group led to decreased activity. Aliphatic and aliphatic-aromatic variations at position 5 and 6 revealed compounds with IC50 values in high nanomolar range. All investigated compounds had low affinity toward P-glycoprotein (P-gp, ABCB1). Pyrrolopyrimidines with small substituents showed moderate inhibition against breast cancer resistance protein (BCRP, ABCG2).

Studies on Pyrrolopyrimidines as Selective Inhibitors of Multidrug-Resistance-Associated Protein in Multidrug Resistance

Multidrug resistance mediated by P-glycoprotein (Pgp) or multidrug-resistance-associated protein (MRP) remains a major obstacle for successful treatment of cancer. Inhibition of Pgp and MRP transport is important for high efficacy of anticancer drugs. Whi

PYRROLOPYRIMIDINE DERIVATIVES USEFUL AS MODULATORS OF MULTIDRUG RESISTANCE

A compound which is a pyrrolopyrimidine of formula (I) wherein: R1 is selected from R9 and halogen; R2 is NR6R7; R3 is selected from H, C1-C6 alkyl which is unsubstituted or substituted and -(CH2) nAr; R4 is selected from H, C1-C6 alkyl and -(CH2)? Ar; or R3 and R4 form, together with the N and C atoms to which they are attached, a fused five-, six-, seven- or eight-membered N-containing saturated ring which is unsubstituted or substituted; R5 is selected from CN, C02R9,C(O)NR10R11, -(CH2)nOH, -(CH2)nR10Rn, -C=CH, -C(S)NR10R11, -C(NH2)=NOR9, -C(R9)=NOR9, -C(NH2)NH, -C(O)R9 and an unsaturated 5- or 6-membered heterocyclic group which contains 1, 2 or 3 heteroatoms selected from N, O and S and which is unsubstituted or substituted; R6 and R7, which are the same or different, are selected from C1-C6 alkyl which is unsubstituted or substituted, -(CH2)nX and -(CH2)nAr; or R6 and R7 form, together with the nitrogen atom to which they are attached, a saturated five-, six-, seven- or eight-membered heterocyclic group which contains one nitrogen atom and 0 or from 1 to 3 additional heteroatoms selected from N, O and S, which is unsubstituted or substituted and which optionally contains one or two bridgehead atoms; R10and R11,which are the same or different, are selected from H, C1-C6 alkyl which is unsubstituted or substituted, -(CH2)nC3-C10 cycloalkyl and -(CH2)nAr; or R10 and R11 form, together with the nitrogen atom to which they are attached, a saturated five or six membered heterocyclic group which contains a nitrogen atom and 0 or from to 3 additional heteroatoms selected from O, S and N, which is unsubstituted or substituted and which is optionally fused to a benzene ring which is unsubstituted or substituted; n is the same or different when more than one is present within a given substituent group and is 0 or an integer of from 1 to 6; X is selected from -CN, -C02R9 and -NR10R11; R9 is the same or different when more than one is present within a given substituent group and is selected from -H, -QAr, -(CH2) nAr, C1-C6 alkyl which is unsubstituted or substituted and -(CH2) nC3-C10cycloalkyl, wherein the cycloalkyl moiety is optionally fused to a benzene ring which is unsubstituted or substituted; Q is C2-C6 alkenylene or alkynylene; and Ar is an unsaturated C6-C10 membered carbocyclic group or an unsaturated 5-11 membered heterocyclic group, which groups are unsubstituted or substituted; or a pharmaceutically acceptable salt thereof. These compounds have activity as inhibitors of MRP (multidrug resistant protein) and may thus be used to modulate multidrug resistance, for instance in potentiating the cytotoxicity of a chemotherapeutic agent.