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Silicon + Oxygen Compounds (Si + O)

Browse all compounds containing Silicon + Oxygen by molecular formula, IUPAC name, or traditional name. Explore molecular weights and compound details.

Total Compounds: 17,719
Showing 2,601 - 2,650 of 17,719
Page 53 of 355
CID Formula IUPAC Name Traditional Name Mol. Weight
471999 C25H47N5O7SSi2 3-[4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-N-isopropyl-triazole-4-carboxamide (1-{9-Amino-3,6-dioxa-7,7-dioxo-1-(1,1,2,2-tetramethyl-1-silapropoxy)-4-[(1,1,2,2-tetramethyl-1-silapropoxy)methyl]-7-thiaspiro[4.4]non-8-en-2-yl}(1,2,3-triazol-5-yl))-N-(methylethyl)carboxamide 617.9
472000 C25H45N5O7SSi2 3-[4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-N-cyclopropyl-triazole-4-carboxamide (1-{9-Amino-3,6-dioxa-7,7-dioxo-1-(1,1,2,2-tetramethyl-1-silapropoxy)-4-[(1,1,2,2-tetramethyl-1-silapropoxy)methyl]-7-thiaspiro[4.4]non-8-en-2-yl}(1,2,3-triazol-5-yl))-N-cyclopropylcarboxamide 615.9
472001 C26H47N5O7SSi2 3-[4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-N-cyclobutyl-triazole-4-carboxamide (1-{9-Amino-3,6-dioxa-7,7-dioxo-1-(1,1,2,2-tetramethyl-1-silapropoxy)-4-[(1,1,2,2-tetramethyl-1-silapropoxy)methyl]-7-thiaspiro[4.4]non-8-en-2-yl}(1,2,3-triazol-5-yl))-N-cyclobutylcarboxamide 629.9
472002 C25H45N5O7SSi2 [3-[4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]triazol-4-yl]-(azetidin-1-yl)methanone [3-[6-amino-4-[tert-butyl(dimethyl)silyl]oxy-1-[[tert-butyl(dimethyl)silyl]oxymethyl]-8,8-dioxo-2,9-dioxa-8$l^{6}-thiaspiro[4.4]non-6-en-3-yl]triazol-4-yl]-(azetidin-1-yl)methanone 615.9
472003 C27H49N5O7SSi2 3-[4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-N-cyclopentyl-triazole-4-carboxamide (1-{9-Amino-3,6-dioxa-7,7-dioxo-1-(1,1,2,2-tetramethyl-1-silapropoxy)-4-[(1,1,2,2-tetramethyl-1-silapropoxy)methyl]-7-thiaspiro[4.4]non-8-en-2-yl}(1,2,3-triazol-5-yl))-N-cyclopentylcarboxamide 643.9
472004 C25H47N5O7SSi2 3-[4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-N-ethyl-N-methyl-triazole-4-carboxamide (1-{9-Amino-3,6-dioxa-7,7-dioxo-1-(1,1,2,2-tetramethyl-1-silapropoxy)-4-[(1,1,2,2-tetramethyl-1-silapropoxy)methyl]-7-thiaspiro[4.4]non-8-en-2-yl}(1,2,3-triazol-5-yl))-N-ethyl-N-methylcarboxamide 617.9
472615 C25H44N4O7Si2 1-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2-oxo-1,7-dioxa-3-azaspiro[4.4]non-3-en-8-yl]-3,5-dimethyl-pyrimidine-2,4-dione 1-[(1R,3R,4R)-6-amino-4-[tert-butyl(dimethyl)silyl]oxy-1-[[tert-butyl(dimethyl)silyl]oxymethyl]-8-oxo-2,9-dioxa-7-azaspiro[4.4]non-6-en-3-yl]-3,5-dimethyl-pyrimidine-2,4-dione 568.8
472616 C25H44N4O7Si2 [(2R,4R,5R)-4-[tert-butyl(dimethyl)silyl]oxy-2-[[tert-butyl(dimethyl)silyl]oxymethyl]-3-cyano-5-(3,5-dimethyl-2,4-dioxo-pyrimidin-1-yl)tetrahydrofuran-3-yl] carbamate [(2R,4R,5R)-4-[tert-butyl(dimethyl)silyl]oxy-2-[[tert-butyl(dimethyl)silyl]oxymethyl]-3-cyano-5-(3,5-dimethyl-2,4-dioxo-pyrimidin-1-yl)tetrahydrofuran-3-yl] carbamate 568.8
472617 C24H44N4O8SSi2 1-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thia-3-azaspiro[4.4]non-3-en-8-yl]-3,5-dimethyl-pyrimidine-2,4-dione 1-[(1R,3R,4R)-6-amino-4-[tert-butyl(dimethyl)silyl]oxy-1-[[tert-butyl(dimethyl)silyl]oxymethyl]-8,8-dioxo-2,9-dioxa-8$l^{6}-thia-7-azaspiro[4.4]non-6-en-3-yl]-3,5-dimethyl-pyrimidine-2,4-dione 604.9
472628 C24H42N4O7Si2 1-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2-oxo-1,7-dioxa-3-azaspiro[4.4]non-3-en-8-yl]-5-methyl-pyrimidine-2,4-dione [1-[2',5'-Bis-O-(tert-butyldimethylsilyl)-.beta.-D-xylofuranosyl]thymine]-3'-spiro-5''-(4''-amino-2''-oxazolone) 554.8
472629 C26H46N4O7Si2 1-[(6R,8R,9R)-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-4-imino-3-methyl-2-oxo-1,7-dioxa-3-azaspiro[4.4]nonan-8-yl]-3,5-dimethyl-pyrimidine-2,4-dione [1-[2',5'-Bis-O-(tert-butyldimethylsilyl)-.beta.-D-xylofuranosyl]-3-N-methylthymine]-3'-spiro-5''-(4''-imino-3''-N-methyl-2''-oxazolidinone) 582.8
472630 C27H48N4O7Si2 1-[(6R,8R,9R)-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-3-methyl-4-methylimino-2-oxo-1,7-dioxa-3-azaspiro[4.4]nonan-8-yl]-3,5-dimethyl-pyrimidine-2,4-dione [1-[2',5'-Bis-O-(tert-butyldimethylsilyl)-.beta.-D-xylofuranosyl]-3-N-methylthymine]-3'-spiro-5''-(4''-N-methylimino-3''-N-methyl-2''-oxazolidinone) 596.9
473441 C33H56N6O11S2Si2 1-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-3,5-dimethyl-pyrimidine-2,4-dione;4-amino-1-[(2R,5S)-2-(hydroxymethyl)-1,3-oxathiolan-5-yl]pyrimidin-2-one 3TC & TSAO-m^3T 833.1
473444 C55H84N12O14S3Si2 1-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-3,5-dimethyl-pyrimidine-2,4-dione;4-amino-1-[(2R,5S)-2-(hydroxymethyl)-1,3-oxathiolan-5-yl]pyrimidin-2-one;N-[2-[4-[3-(isopropylamino)-2-pyridyl]piperazine-1-carbonyl]-1H-indol-5-yl]methanesulfonamide 3TC & TSAO-m^3T & BHAP der. U90152 1289.7
473445 C50H78N8O14S2Si2 1-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-3,5-dimethyl-pyrimidine-2,4-dione;4-amino-1-[(2R,5S)-2-(hydroxymethyl)-1,3-oxathiolan-5-yl]pyrimidin-2-one;6-benzyl-1-(ethoxymethyl)-5-isopropyl-pyrimidine-2,4-dione 3TC & TSAO-m^3T & MKC-442 1135.5
475073 C27H48BrN3O8SSi2 1-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-3-(3-bromopropyl)-5-methyl-pyrimidine-2,4-dione [1-[2',5'-Bis[O-(tert-butyldimethylsilyl)]-.beta.-D-ribofuranosyl]-3-N-(3-bromopropyl)thymine]-3-spiro-5"-(4"-amino-1",2"-oxathiole2",2"-dioxide) 710.8
475074 C30H54BrN3O8SSi2 1-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-3-(6-bromohexyl)-5-methyl-pyrimidine-2,4-dione [1-[2',5'-Bis[O-(tert-butyldimethylsilyl)]-.beta.-D-ribofuranosyl]-3-N-(6-bromohexyl)thymine]-3-spiro-5"-(4"-amino-1",2"-oxathiole2",2"-dioxide) 752.9
475075 C32H58BrN3O8SSi2 1-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-3-(8-bromooctyl)-5-methyl-pyrimidine-2,4-dione [1-[2',5'-Bis[O-(tert-butyldimethylsilyl)]-.beta.-D-ribofuranosyl]-3-N-(8-bromooctyl)thymine]-3-spiro-5"-(4"-amino-1",2"-oxathiole2",2"-dioxide) 781.0
475076 C33H60BrN3O8SSi2 1-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-3-(9-bromononyl)-5-methyl-pyrimidine-2,4-dione [1-[2',5'-Bis[O-(tert-butyldimethylsilyl)]-.beta.-D-ribofuranosyl]-3-N-(9-bromononyl)thymine]-3-spiro-5"-(4"-amino-1",2"-oxathiole2",2"-dioxide) 795.0
475079 C40H67N5O13SSi2 3-[6-[3-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]hexyl]-1-[(2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl]-5-methyl-pyrimidine-2,4-dione TSAO-T Heterodimer der. 914.2
475080 C37H61N5O13SSi2 3-[3-[3-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]propyl]-1-[(2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl]-5-methyl-pyrimidine-2,4-dione [TSAO-T]-(CH2)3-[dThd] 872.1
475081 C41H69N5O13SSi2 3-[7-[3-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]heptyl]-1-[4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl]-5-methyl-pyrimidine-2,4-dione [TSAO-T]-(CH2)7-[dThd] 928.2
475082 C37H60N8O12SSi2 3-[3-[3-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]propyl]-1-[(2R,4S,5S)-4-azido-5-(hydroxymethyl)tetrahydrofuran-2-yl]-5-methyl-pyrimidine-2,4-dione 3-[3-[3-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]propyl]-1-[(2R,4S,5S)-4-azido-5-(hydroxymethyl)tetrahydrofuran-2-yl]-5-methyl-pyrimidine-2,4-dione 897.2
475083 C38H62N8O12SSi2 3-[4-[3-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]butyl]-1-[(2R,4S,5S)-4-azido-5-(hydroxymethyl)tetrahydrofuran-2-yl]-5-methyl-pyrimidine-2,4-dione [TSAO-T]-(CH2)4-[AZT] 911.2
475084 C39H64N8O12SSi2 3-[5-[3-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]pentyl]-1-[(2R,4S,5S)-4-azido-5-(hydroxymethyl)tetrahydrofuran-2-yl]-5-methyl-pyrimidine-2,4-dione [TSAO-T]-(CH2)5-[AZT] 925.2
475085 C40H66N8O12SSi2 3-[6-[3-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]hexyl]-1-[(2R,4S,5S)-4-azido-5-(hydroxymethyl)tetrahydrofuran-2-yl]-5-methyl-pyrimidine-2,4-dione [TSAO-T]-(CH2)6-[AZT] 939.2
475086 C41H68N8O12SSi2 3-[7-[3-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]heptyl]-1-[(2R,4S,5S)-4-azido-5-(hydroxymethyl)tetrahydrofuran-2-yl]-5-methyl-pyrimidine-2,4-dione [TSAO-T]-(CH2)7-[AZT] 953.3
475087 C42H70N8O12SSi2 3-[8-[3-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]octyl]-1-[(2R,4S,5S)-4-azido-5-(hydroxymethyl)tetrahydrofuran-2-yl]-5-methyl-pyrimidine-2,4-dione [TSAO-T]-(CH2)8-[AZT] 967.3
475088 C43H72N8O12SSi2 3-[9-[3-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]nonyl]-1-[(2R,4S,5S)-4-azido-5-(hydroxymethyl)tetrahydrofuran-2-yl]-5-methyl-pyrimidine-2,4-dione 3-[9-[3-[(1R,3R,4R)-6-amino-4-[tert-butyl(dimethyl)silyl]oxy-1-[[tert-butyl(dimethyl)silyl]oxymethyl]-8,8-dioxo-2,9-dioxa-8$l^{6}-thiaspiro[4.4]non-6-en-3-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]nonyl]-1-[(2R,4S,5S)-4-azido-5-(hydroxymethyl)tetrahydrofuran-2-yl]-5-methyl-pyrimidine-2,4-dione 981.3
475131 C13H24N4O3SSi 5-amino-2-[2-[tert-butyl(dimethyl)silyl]ethoxymethyl]-1,1-dioxo-1,2,6-thiadiazine-4-carbonitrile 5-amino-2-[2-[tert-butyl(dimethyl)silyl]ethoxymethyl]-1,1-dioxo-1,2,6-thiadiazine-4-carbonitrile 344.51
475132 C21H44N2O5SSi2 2,6-bis[2-[tert-butyl(dimethyl)silyl]ethoxymethyl]-1,1-dioxo-1,2,6-thiadiazin-3-one 2,6-bis[2-[tert-butyl(dimethyl)silyl]ethoxymethyl]-1,1-dioxo-1,2,6-thiadiazin-3-one 492.8
475133 C22H46N2O5SSi2 2,6-bis[2-[tert-butyl(dimethyl)silyl]ethoxymethyl]-5-methyl-1,1-dioxo-1,2,6-thiadiazin-3-one 2,6-bis[2-[tert-butyl(dimethyl)silyl]ethoxymethyl]-5-methyl-1,1-dioxo-1,2,6-thiadiazin-3-one 506.8
475134 C20H32N2O4SSi 2-benzyl-6-[2-[tert-butyl(dimethyl)silyl]ethoxymethyl]-5-methyl-1,1-dioxo-1,2,6-thiadiazin-3-one 2-benzyl-6-[2-[tert-butyl(dimethyl)silyl]ethoxymethyl]-5-methyl-1,1-dioxo-1,2,6-thiadiazin-3-one 424.6
476864 C37H59N5O12SSi2 3-[3-[3-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]propyl]-1-[5-(hydroxymethyl)-2,5-dihydrofuran-2-yl]-5-methyl-pyrimidine-2,4-dione 3-[3-[3-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]propyl]-1-[5-(hydroxymethyl)-2,5-dihydrofuran-2-yl]-5-methyl-pyrimidine-2,4-dione 854.1
477091 CuH92K6O41SiW11 copper;potassium hydride;silane;tungsten;hentetracontahydrate copper;potassium hydride;silane;tungsten;hentetracontahydrate 3097.2
477092 CoH92K6O41SiW11 cobalt;potassium hydride;silane;tungsten;hentetracontahydrate cobalt;potassium hydride;silane;tungsten;hentetracontahydrate 3092.6
477094 GaH94K5O41SiW11 gallane;potassium hydride;silane;tungsten;hentetracontahydrate gallane;potassium hydride;silane;tungsten;hentetracontahydrate 3066.3
477095 C42H139CoN7O40SiW11+6 aniline;cobalt;phenylammonium;silane;tungsten;tetracontahydrate aniline;cobalt;phenylammonium;silane;tungsten;tetracontahydrate 3491.8
477096 C42H181CoN7O40SiW11+6 cobalt;cyclohexanamine;cyclohexylammonium;silane;tungsten;tetracontahydrate cobalt;cyclohexanamine;cyclohexylammonium;silane;tungsten;tetracontahydrate 3534.2
477097 C16H140N5O40SiSnW11+5 lambda2-stannane;methane;silane;pentakis(trimethylammonium);tungsten;tetracontahydrate lambda2-stannane;methane;silane;pentakis(trimethylammonium);tungsten;tetracontahydrate 3212.3
477174 C30H52N4O11SSi2 methyl (2S)-2-[[2-[3-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]acetyl]amino]propanoate [1-[2',5'-Bis-O-(tert-butyldimethylsilyl)-.beta.-D-ribofuranosyl]-3-N-[[N-[1-(S)-(methoxycarbonyl)ethyl]carbamoyl]methyl]thymine]-3'-spiro-5''-(4''-amino-1'',2''-oxathiole-2'',2''-dioxide) 733.0
477175 C36H56N4O11SSi2 benzyl (2S)-2-[[2-[3-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]acetyl]amino]propanoate [1-[2',5'-Bis-O-(tert-butyldimethylsilyl)-.beta.-D-ribofuranosyl]-3-N-[[N-[1-(S)-(benzyloxycarbonyl)ethyl]carbamoyl]methyl]thymine]-3'-spiro-5''-(4''-amino-1'',2''-oxathiole-2'',2''-dioxide) 809.1
477176 C38H60N4O11SSi2 benzyl (2S)-2-[[2-[3-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]acetyl]amino]-3-methyl-butanoate [1-[2',5'-Bis-O-(tert-butyldimethylsilyl)-.beta.-D-ribofuranosyl]-3-N-[[N-[1-(S)-(benzyloxycarbonyl)isobutyl]carbamoyl]methyl]thymine]-3'-spiro-5''-(4''-amino-1'',2''-oxathiole-2'',2''-dioxide) 837.1
477177 C44H62N4O13SSi2 dibenzyl (2S)-2-[[2-[3-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]acetyl]amino]butanedioate [1-[2',5'-Bis-O-(tert-butyldimethylsilyl)-.beta.-D-ribofuranosyl]-3-N-[[N-[1-(S),2-bis(benzyloxycarbonyl)ethyl]carbamoyl]methyl]thymine]-3'-spiro-5''-(4''-amino-1'',2''-oxathiole-2'',2''-dioxide) 943.2
477178 C45H64N4O13SSi2 dibenzyl (2S)-2-[[2-[3-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]acetyl]amino]pentanedioate [1-[2',5'-Bis-O-(tert-butyldimethylsilyl)-.beta.-D-ribofuranosyl]-3-N-[[N-[1-(S),3-bis(benzyloxycarbonyl)propyl]carbamoyl]methyl]thymine]-3'-spiro-5''-(4''-amino-1'',2''-oxathiole-2'',2''-dioxide) 957.2
477179 C29H50N4O11SSi2 (2S)-2-[[2-[3-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]acetyl]amino]propanoic acid (2S)-2-[[2-[3-[(1R,3R,4R)-6-amino-4-[tert-butyl(dimethyl)silyl]oxy-1-[[tert-butyl(dimethyl)silyl]oxymethyl]-8,8-dioxo-2,9-dioxa-8$l^{6}-thiaspiro[4.4]non-6-en-3-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]acetyl]amino]propanoic acid 719.0
477180 C31H54N4O11SSi2 (2S)-2-[[2-[3-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]acetyl]amino]-3-methyl-butanoic acid (2S)-2-[[2-[3-[(1R,3R,4R)-6-amino-4-[tert-butyl(dimethyl)silyl]oxy-1-[[tert-butyl(dimethyl)silyl]oxymethyl]-8,8-dioxo-2,9-dioxa-8$l^{6}-thiaspiro[4.4]non-6-en-3-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]acetyl]amino]-3-methyl-butanoic acid 747.0
477181 C30H50N4O13SSi2 (2S)-2-[[2-[3-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]acetyl]amino]butanedioic acid (2S)-2-[[2-[3-[(1R,3R,4R)-6-amino-4-[tert-butyl(dimethyl)silyl]oxy-1-[[tert-butyl(dimethyl)silyl]oxymethyl]-8,8-dioxo-2,9-dioxa-8$l^{6}-thiaspiro[4.4]non-6-en-3-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]acetyl]amino]butanedioic acid 763.0
477182 C31H52N4O13SSi2 (2S)-2-[[2-[3-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]acetyl]amino]pentanedioic acid (2S)-2-[[2-[3-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]acetyl]amino]pentanedioic acid 777.0
477183 C39H62N4O12SSi2 2-[3-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]ethyl (2S)-2-(benzyloxycarbonylamino)-3-methyl-butanoate [1-[2',5'-Bis-O-(tert-butyldimethylsilyl)-.beta.-D-ribofuranosyl]-3-N-(2-hydroxyethyl)thymine]-3'-spiro-5''-(4''-amino-1'',2''-oxathiole-2'',2''-dioxide) 867.2
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