58-60-6Relevant articles and documents
A simple and efficient synthesis of puromycin, 2,2′-anhydro- pyrimidine nucleosides, cytidines and 2′,3′-anhydroadenosine from 3′,5′-O-sulfinyl xylo-nucleosides
Takatsuki, Ken-Ichi,Ohgushi, Sumito,Kohmoto, Shigeo,Kishikawa, Keiki,Yamamoto, Makoto
, p. 719 - 734 (2007/10/03)
Synthesis of antibiotics, puromycin and 3 ′-amino-3 ′-deoxy-N 6 ,N 6 -dimethyladenosine 11 was achieved by utilizing the cyclic sulfite 6a of the xylo -3 ′,5 ′-dihydroxy group as a new protective group. The key synthetic step is the deprotection of the sulfite moiety through the intramolecular cyclization of 2-α-carbamate 7 . In a similar manner, 2,2 ′-anhydro-pyrimidine nucleosides 15 , ribo -cytidines 17 and 2 ′,3 ′-anhydroadenosine 14 were prepared in high yields from the corresponding sulfites 4 , 5 , and 6b , respectively. Copyright Taylor & Francis Group, LLC.
Syntheses of puromycin from adenosine and 7-deazapuromycin from tubercidin, and biological comparisons of the 7-aza/deaza pair
Robins, Morris J.,Miles, Robert W.,Samano, Mirna C.,Kaspar, Roger L.
, p. 8204 - 8210 (2007/10/03)
Protection (05′) of 2′,3′-anhydroadenosine with tert-butyldiphenylsilyl chloride and epoxide opening with dimethylboron bromide gave the 3′-bromo-3′-deoxy xylo isomer which was treated with benzylisocyanate to give the 2′-O-(N-benzylcarbamoyl) derivative. Ring closure gave the oxazolidinone, and successive deprotection concluded an efficient route to 3′-amino-3′-deoxyadenosine. Analogous treatment ofthe antibiotic tubercidin {7-deazaadenosine; 4-amino-7-(β-D-ribofuranosyl)-pyrrolo[2,3-d]pyrimidine} gave 3′-amino-3′-deoxytubercidin. Trifluoroacetylation of the 3′-amino function, elaboration of the heterocyclic amino group into a (1,2,4-triazol-4-yl) ring with N,N′-bis-[(dimethylamino)methylene]hydrazine, and nucleophilic aromatic substitution with dimethylamine gave puromycin aminonucleoside [9-(3-amino-3-deoxy-β-D-ribofuranosyl)-6-(dimethylamino)purine] and its 7-deaza analogue. Aminoacylation [BOC-(4-methoxy-L-phenylalanine)] and deprotection gave puromycin and 7-deazapuromycin. Most reactions gave high yields at or below ambient temperature. Equivalent inhibition of protein biosynthesis in a rabbit reticulocyte system and parallel growth inhibition of several bacteria were observed with the 7-aza/deaza pair. Replacement of N7 in the purine ring of puromycin by "CH" has no apparent effect on biological activity.
Nucleic acid analog with amide linkage and method of making that analog
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, (2008/06/13)
The present invention relates to a nucleic acid analog having the formula: STR1 where R is a compound selected from a group consisting of hydrogen, a hydroxyl group, a hydrophilic group or a hydrophobic group, n is greater than or equal to 2, and Base is uracil, adenine, guanine, cytosine, thymine or hypoxanthine, with Bases in the analog being the same or different. Further, the present invention relates to a processes for making and using the analog.
Asymmetric synthesis of nucleosides via molybdenum-catalyzed alkynol cycloisomerization coupled with stereoselective glycosylations of deoxyfuranose glycals and 3-amidofuranose glycals
McDonald, Frank E.,Gleason, Mark M.
, p. 6648 - 6659 (2007/10/03)
Deoxygenated furanose glycals were efficiently prepared by molybdenum pentacarbonyl-catalyzed cycloisomerization of alkynyl alcohols, which were easily prepared in chiral nonracemic form by short synthetic sequences featuring asymmetric epoxidations of commercially available allylic alcohols. The cycloisomerization reaction was demonstrated to be compatible with ester and amide functional groups. A 2,3-dideoxyfuranose glycal was stereoselectively converted into the anti-AIDS β-nucleoside stavudine (2',3'-didehydro-2',3'-dideoxythymidine, d4T) and the antiviral 3'-deoxy-β-nucleoside cordycepin. The anchimeric and hydrogen-bond-directing effects of 3-amido-2,3-dideoxyfuranose glycals were exploited in a novel and highly stereoselective synthesis strategy for a variety of biologically active 3'-amino-2',3'-dideoxy- and 3'-amino-3'-deoxy-β-nucleosides, including puromycin aminonucleoside. In addition, the mechanism of the molybdenum-catalyzed alkynol cycloisomerization reaction has been studied. Evidence is presented which indicates that cyclic molybdenum carbene anions are catalytic intermediates in these cyclizations.
Polyamine biosynthesis inhibitors
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, (2008/06/13)
A compound having the formula: STR1 wherein R is STR2 wherein R' is hydrogen or aminopropyl and salts thereof.