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Bolecules
AYYYY
18
Organic Chemistry
Undergraduate 4
12/07/2015

Additional Organic Chemistry Flashcards

 


 

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Term
Actinomycin
Definition
inhibits DNA transcription by intercalating into the transcription initation complex. This blocks elongation of RNA chain by RNA polymerase. First antibiotic to have anticancer properties
Term
CC1065
Definition
Alkylates duplex DNA
Both bind to minor groove causing the alkylation of guanosine amino group
does not require reduction
Term
Benzopyrene and aflatoxin
Definition
Non covalent DNA intercalaters and DNA alkyating agents
Term
Cisplatin and Mitomycin (red.)
(And other mustard agents)
Definition
Undergo hyrdrolysis and then chemically crosslink with DNA by alkylation
Term
Daunomycin
Definition
Pro drugs that alkylates and intercalate
*Requires reduction
From a highly reactive quinone and lose a sugar substituent
Term
Bleomycin, enediyne, leinmycin
Definition
cause scission of DNA duplex
Bleo - Molecular machine gun shoots OOH radicals at DNA backbone
Enediyne undergoes bergman as well
Term
Calichaemycin, esperamycin, Dynemycin, enediyne, bleomycin
Definition
cleaves DNA by generating benzene 1,4 diradical species (Bergman)
Term
Intercalating agents
Definition
Ethidium bromide, arcidine orange, thalidomide, etoposide, actinomycin
Term
Etoposide (Synthetic derivative)
Definition
toxic lignan extracted from plant roots to treat acute lympohcytic leukemia
-From intercalation complex with DNA and topoisomerase 2 ---> preventing religation of DNA strand during replication
Term
Temozoloamide (Nitrosamine)
Definition
anticancer prodrug that is activated to produce a methyldiazonium that covalently attached to duplex DNA via methylation
Term
Chloramphenicol
Definition
blocks growth of peptide by binding to protein residues; 50th subunit
Term
Erythromycin
Definition
Prevents tRNA bound at A site from transferring to P site; 50th subunit
Term
Tetracycline
Definition
Prevents aminoacyl tRNAs from finding the A site
30th subunit
Term
Streptomycin
Definition
First tuberculosis
coordinates 16s portion of 30s to prevent binding of N-fromylmethionyl-tRNA
Term
Monoalkylating agents
Definition
N-nitrosamines, alkyl halides, diazoalkanes, temozololmide, aflotoxin, CC1065,benzopyene,Daunomycin
Term
DNA cleaving agents
Definition
Calichaemycin, esperamycin, Dynemycin, enediyne, bleomycin
Term
Prodrug antibiotics

Reduction needed:
Definition
Cisplatin (Hydrolysis), Fe coordination (Bleomycin)
Mitomycin, daunomycin, dynemecin, calichaemycin, leinmycin
Term
DNA hydrolysis enzymes
Definition
phosphate cleavage, nucleoside base hydrolysis
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