摘要:
In one aspect the invention includes an "antibody cocktail" approach to multi-step targeting of an active agent to a target site. This comprises administering multiple targeting moiety conjugates, wherein the targeting moieties are antibodies with nonoverlapping patterns of cross-reactivity for epitopes at the target site and wherein each targeting conjugate has a ligand or anti-ligand that is complementary to a corresponding anti-ligand or ligand on the active agent conjugate. In a further aspect the invention includes a multi-step method for targeting specifically a thrombolytic agent to the site of a thrombus, wherein the targeting moiety may be an annexin. In another aspect annexin may be the targeting moiety in a multi-step method for delivery of an active agent to a site having exposed anionic membrane lipids. In a final aspect, the invention includes specifically the compound biotinamido-N-methylglycyl-seryl-O-succinamido-benzyl DOTA, a chelating structure which may be used to deliver radiometals to a target site.
摘要:
Metal complexes comprising a polydentate chelating group, catalysts and polymerization processes using the same for the polymerization of olefins, especially propylene, are disclosed.
摘要:
A bleach catalyst in the form of a ligand of formula (I); wherein Z and Z are independently selected from monocyclic or polycyclic aromatic ring structures optionally containing one or more heteroatoms, each aromatic ring structure being optionally substituted by one or more substituents. Y and Y are independently selected from C, N, O, Si, P and S atoms. A and A are independently selected from hydrogen, alkyl, alkenyl and cycloalkyl (each of alkyl, alkenyl and cycloalkyl being optionally substituted, electron donating groups and electron withdrawing groups); i and j are selected from 0, 1 and 2 to complete the valency of the groups Y and Y each of Q -Q is independently selected from groups of formula (a); wherein 10 > a + b + c + d > = 2; each Y is independently selected from O, S, SO, SO2, (G )(G )N-C(O), aryl, heteroaryl, P and P(O) each of A -A is independently selected from the groups hereinbefore defined for A and A ; ion pairs, complexes and the use of such ligands, ion pairs and complexes in cleaning and/or bleaching compositions are also described.
摘要:
This invention relates to novel highly functionalized phosphine ligands as ancillary ligands in radiopharmaceuticals. Also, this invention provides radiopharmaceuticals comprised of highly functionalized phosphine ligated 99mTc labeled HYNIC-conjugated biomolecules that selectively localize at sites of disease and thus allow an image to be obtained of the loci using gamma scintigraphy. The invention also provides methods of use of the radiopharmaceuticals as imaging agents for the diagnosis of cardiovascular disorders such as thromboembolic disease or atherosclerosis, infectious disease and cancer.
摘要:
A process is described for producing a transition metal complex of formula (B) wherein M is Fe[II], Fe[III], Co[I], Co[II], Co[III], Mn[I], Mn[II], Mn[III], Mn[IV], Ru[II], Ru[III] or Ru[IV]; X represents an atom or group covalently or ionically bonded to the transition metal M; T is the oxidation state of the transition metal M and b is the valency of the atom or group X; R , R , R , R , R , R and R are independently selected from hydrogen, halogen, hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl or substituted heterohydrocarbyl; and when any two or more of R - R are hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl or substituted heterohydrocarbyl, said two or more can be linked to form one or more cyclic substituents; comprising reacting together in a single stage reaction components comprising (1) precursors capable of forming Ligand (B) and (2) a compound of the formula M[T]-(T/b)X. The complex has utility as a catalyst for the polymerisation of 1-olefins.
摘要:
Olefins, such as ethylene, are polymerized using as a polymerization catalyst a complex of a selected transition metal with an anionic ligand that has at least three atoms that may coordinate to the transition metal. Also disclosed are the above selected transition metal complexes, and intermediates thereto.
摘要:
Chiral catalysts for enantioselectively epoxidizing a prochiral olefin and for enantioselectively oxidizing a prochiral sulfide are disclosed, together with methods of using such catalysts. In accordance with one aspect of the invention, the catalyst is a salen derivative which has general structure (I). In accordance with another aspect of the present invention is a method of producing an epoxychroman using a chiral catalyst. In accordance with this method, a chromene derivative, an oxygen atom source, and a chiral catalyst are reacted under such conditions and for such time as is needed to epoxidize said chromene derivative. In accordance with yet another aspect of this invention is a method of enantioselectively epoxidizing a cis-cinnamate derivative to make taxol or an analog thereof. In accordance with another aspect a method of disproportionation of hydrogen peroxide using the catalysts of the present invention is disclosed.