3768-14-7Relevant articles and documents
CONVENIENT SYNTHESES OF ADENOSINE 5'-DIPHOSPHATE, ADENOSINE 5'-METHYLENEDIPHOSPHONATE, AND ADENOSINE 5'-TRIPHOSPHATE
Dixit, Vyas M.,Poulter, C. Dale
, p. 4055 - 4058 (1984)
Adenosine 5'-tosylate is converted to adenosine 5'-diphosphate (ADP), adenosine 5'-methylenediphosphonate, and adenosine 5'-triphosphate (ATP) in good yields by direct displacement with the appropriate inorganic salt.
2-(4-Nitrophenyl)ethyl Methylenebis(phosphonate): A Versatile Reagent for the Synthesis of Nucleoside 5′-Methylenebis(phosphonate)s
Lesiak, Krystyna,Watanabe, Kyoichi A.,George, Jay,Pankiewicz, Krzysztof W.
, p. 1906 - 1909 (2007/10/03)
2-(4-Nitrophenyl)ethyl methylenebis(phosphonate) (6) was prepared by reaction of equimolar amounts of 2-(4-nitrophenyl)ethyl alcohol and methylenebis(phosphonyl) tetrachloride in the presence of tetrazole. Compound 6 was further converted into the corresponding 4-nitrophenylethyl trisanhydride intermediate 7 by dehydration with diisopropylcarbodiimide (DIC). Reaction of 7 with either 2′,3′-O-isopropylideneadenosine (8a) or 2′,3′-O-isopropylideneguanosine (8b) afforded, after hydrolysis, the desired P 1-[2-(4-nitrophenyl)ethyl]-F2-(2′,3′-O- isopropylideneadenosin-5′-yl) methylenebis(phosphonate) (9a) and guanosine analogue 9b, respectively. A similar treatment of intermediate 7 with 3′-O-acetylthymidine (12a), 3′-O-acetyl-2′-deoxy-N4-benzoylcytidine (12b), 3′O-acetyl-2′-deoxy-N6-benzoyladenosine (12c), and 3′-O-acetyl-2′-deoxy-N2-isobutyrylguanosine (12d) gave the corresponding 2-(4-nitrophenyl)ethyl methylenebis(phosphonate)s 13a-d. These compounds as well as 9a,b were treated with 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) which caused elimination of the 2-(4-nitrophenyl)ethyl group. The base labile 3′-O-acetyl, N4-acetyl, N6-benzoyl, and N2-isobutyryl groups of 12a-d were also removed during the DBU treatment. Thus, the 5′methylenebis(phosphonate)s of 2′,3′-O-isopropylideneadenosine (10a), 2′,3′-O-isopropylideneguanosine (10b), thymidine (14a), 2′-deoxycytidine (14b), 2′-deoxyadenosine (14c), and 2′deoxyguanosine (14d) were prepared in good yield. De-O-isopropylidenation of 10a and 10b afforded adenosine 5′-methylenebis(phosphonate) (11a) and guanosine 5′-methylenebis(phosphonate) (11b), respectively.
EVIDENCE A FOR PROTOPHOSPHATASE CATALYSED CLEAVAGE OF ADENOSINE TRIPHOSPHATE BY A DISSOCIATIVE-TYPE MECHANISM WITHIN A RECEPTOR-SUBSTRATE COMPLEX
Blackburn, G. Michael,Thatcher, Gregory R. J.,Hosseini, Mir Wais,Lehn, Jean-Marie
, p. 2779 - 2782 (2007/10/02)
Analogues of ATP and diadenosine 5',5''-P1,P4-tetraphosphate, Ap4A, have been used to explore the specificity and mechanism of the proto-ATPase activity of the macrocyclic polyamine -N6O2 (1).The results show that (1) has exonuclease-like activity and support a mechanism that is dissociative in character within a pre-associative scheme resulting from receptor-substrate binding.