Dirhodium tetraacetate CAS:15956-28-2 99% Kiriata matomato-pango
Nama Putumōhio | XD90641 |
Ingoa Hua | Dirhodium tetraacetate |
CAS | 15956-28-2 |
Tātai rāpoi | C8H12O8Rh2 |
Taumaha rāpoi | 441.987 |
Nga Taipitopito Rokiroki | Ambient |
Waehere Rere Whakariterite | 28439000 |
Whakatakotoranga Hua
Te ahua | Kiriata matomato-pango |
Te whakamatautau | 99% |
Ko nga tauwhitinga here equatorial N7/O6 o te matatini antitumor active Rh(2)(OAc)(4)(H(2)O)(2) (OAc(-) = CH(3)CO(2)(-)) me te kongakonga DNA d(GpG) kua tino whakatauhia e te NMR spectroscopy.Tuhinga o mua X-ray crystallographic whakatau o te upoko-ki-upoko (HH) me te upoko-ki-hiku (HT) tāpiritanga o te dirhodium tetraacetate me te 9-ethylguanine (9-EtGH) i whakaatu i te pirititanga o mua N7/O6 guanine nucleobases e hora ana i te Rh -Rh here.Ko te kore o te protonation N7 i te pH iti me te pikinga nui o te waikawa o te N1-H (pK(a) tata ki te 5.7 ka whakatauritea ki te 8.5 mo te N7 anake nga taapiri konukawata herea), e tohuhia ana e te titrations whakawhirinaki pH o te purine H8 (1). )H NMR resonances mo Rh(2)(OAc)(2)(9-EtG)(2) me Rh(2)(OAc)(2-)[d(GpG)], he rite ki te herenga N7/O6 bidentate o te guanine nucleobases.Ko nga uara pK(a) i whakatauhia mo te N1-H (de)protonation, mai i nga rangahau whakawhirinaki pH o nga resonances C6 me C2 (13)C NMR mo te Rh(2)(OAc)(2)(9-EtG)( 2) ngohe, e rite ana ki te t ngongo i ahu mai i te H8 (1)H NMR titrations resonance.Te whakatairite o te (13)C NMR resonances o C6 me C2 mo te dirhodium taapiri Rh(2)(OAc)(2)(9-EtG)(2) me Rh(2)(OAc)(2)[d(GpG )] me te rite o nga resonances o nga hononga kore here [i te pH 7.0 mo te 9-EtGH me te pH 8.0 mo te d(GpG)], e whakaatu ana i nga nekehanga nui o Deltadelta mo te 11.0 me te 6.0 ppm mo C6 me C2, ia;Ko nga nekehanga o muri e whakaatu ana i te paanga o te herenga O6 ki nga pokapū dirhodium me te whakarei ake i te waikawa o te N1-H.Ko te kaha o te H8/H8 ROE e whiti ana i roto i te 2D ROESY NMR spectrum o Rh(2)(OAc)(2)[d(GpG)] e tohu ana i te mahunga ki te upoko o nga turanga guanine.Ko te taapiri Rh(2)(OAc)(2)[d(GpG)] e whakaatu ana e rua nga kaiwhakarite ringa matau nui, HH1 R me HH2 R, me te HH1 R e toru nga wa te nui ake i te HH2 R rereke. Ko nga taapiri i whakaatu mai ko te repuckering o nga mowhiti huka 5'-G ki te C3'-endo (momo-N), te pupuri o te C2'-endo (momo S-momo) mo te 3'-G huka ring gs, me te tuunga anti e pa ana ki te nga here glycosyl.Ko nga ahuatanga hangahanga mo te Rh(2)(OAc)(2))[d(GpG)] na roto i te hihinga NMR he tino rite ki era mo cis-[Pt(NH(3))(2))[d( GpG)]] me te whakamana i nga rangahau whakatauira rapoi.