| —— |
(3S*,4R*)-1-(o-nitrobenzyloxycarbonyltriphenylphosphoranylidene)methyl-3-<(R*)-1-(o-nitrobenzyloxycarbonyloxy)ethyl>-4-(4'-hydroxymethylphenylcarbonyl)methyl-azetidin-2-one |
88140-03-8 |
C49H42N3O12P |
895.859 |
| —— |
(3S*,4R*)-1-(o-nitrobenzyloxycarbonyltriphenylphosphoranylidene)methyl-3-<(R*)-1-(o-nitrobenzyloxycarbonyloxy)ethyl>-4-(phenylthiocarbonyl)methyl-azetidin-2-one |
67520-38-1 |
C48H40N3O11PS |
897.899 |
| —— |
(3S*,4R*)-1-(o-nitrobenzyloxycarbonyltriphenylphosphoranylidene)methyl-3-<(R*)-1-(o-nitrobenzyloxycarbonyloxy)ethyl>-4-(4'-2-hydroxyethylphenyl)carbonylmethyl-azetidin-2-one |
88140-00-5 |
C50H44N3O12P |
909.886 |
| —— |
(3S*,4R*)-1-(o-nitrobenzyloxycarbonyltriphenylphosphoranylidene)methyl-3-<(R*)-1-(o-nitrobenzyloxycarbonyloxy)ethyl>-4-(4'-carboxymethylphenyl)carbonylmethyl-azetidin-2-one |
88140-22-1 |
C50H42N3O13P |
923.87 |
| —— |
(3S*,4R*)-1-(o-nitrobenzyloxycarbonyltriphenylphosphoranylidene)methyl-3-<(R*)-1-(o-nitrobenzyloxycarbonyloxy)ethyl>-4-<4'-(N-methylamidomethyl)phenylcarbonylmethyl>-azetidin-2-one |
88140-23-2 |
C51H45N4O12P |
936.912 |
| —— |
(3S*,4R*)-1-(o-nitrobenzyloxycarbonyltriphenylphosphoranylidene)methyl-3-<(R*)-1-(o-nitrobenzyloxycarbonyloxy)ethyl>-4-(4'-methylsulfonyloxymethylphenylcarbonyl)methyl-azetidin-2-one |
88140-04-9 |
C50H44N3O14PS |
973.951 |
| —— |
(3S*,4R*)-1-(o-nitrobenzyloxycarbonyltriphenylphosphoranylidene)methyl-3-<(R*)-1-(o-nitrobenzyloxycarbonyloxy)ethyl>-4-<4'-(2-pyranyloxymethyl)phenylcarbonyl>methyl-azetidin-2-one |
88139-98-4 |
C54H50N3O13P |
979.977 |
| —— |
(3S*,4R*)-1-(o-nitrobenzyloxycarbonyltriphenylphosphoranylidene)methyl-3-<(R*)-1-(o-nitrobenzyloxycarbonyloxy)ethyl>-4-(2-pyridylthiocarbonyl)methyl-azetidin-2-one |
88139-89-3 |
C47H39N4O11PS |
898.887 |
| —— |
(3S*,4R*)-1-(o-nitrobenzyloxycarbonyltriphenylphosphoranylidene)methyl-3-<(R*)-1-(o-nitrobenzyloxycarbonyloxy)ethyl>-4-<4'-(2-t-butyldimethylsilyloxyethyl)phenylcarbonyl>methyl-azetidin-2-one |
88139-95-1 |
C56H58N3O12PSi |
1024.15 |
| —— |
(3S*,4R*)-1-(o-nitrobenzyloxycarbonyltriphenylphosphoranylidene)methyl-3-<(R*)-1-(o-nitrobenzyloxycarbonyloxy)ethyl>-4-(2'-hydroxymethyl-5-thienylcarbonyl)methyl-azetidin-2-one |
88139-99-5 |
C47H40N3O12PS |
901.887 |