The ecteinascidins are a family of tetrahydroisoquinoline alkaloids isolated from the tunicate Ecteinascidia turbinata. Ecteinascidin 743 is a candidate for the treatment of several human cancers. Ecteinascidins have been shown to kill tumor cells in vitro, inhibit tumor growth in vivo, suppress all...

A fortified enzyme preparation of the gorgonian Pseudopterogorgia americana or Pseudopterogorgia elisabethae has been developed which efficiently transforms a variety of precursor molecules, e.g., sterols, to their corresponding metabolites, e.g., 9(11)-secosteroid in high yield. NAD, NADP, and glut...

Cyclic aryl ethers, thioethers or amines, and methods for synthesis are
disclosed. These cyclic aryl compounds are synthesized by combining a first
dinucleophile with a substituted benzene metallized electron-withdrawing
complex,
having halo or nitro substituent groups, to form a li...

Cyclic aryl ethers, thioethers or amines, and methods for synthesis are
disclosed. These cyclic aryl compounds are synthesized by combining a first
dinucleophile with a substituted benzene metallized electron-withdrawing
complex,
having halo or nitro substituent groups, to form a li...

The electrochem. behavior of cyclcopentadienyliron contg. complexes and polymers has given rise to useful materials, such as electrochem. probes for biol. systems, electrocatalysts, and electrochem. switches.The development of new systems contg. cyclopentadienyliron complexes can only improve and in...

A review presents all classes of macromols. contg. iron-carbon bonds and highlights some examples of these materials. Ferrocene-based polymer, polymers contg. cyclopentadienyliron complexed arenes or iron carbonyl complexes, iron polyynes, and polymer with Fe-Fe bond are discussed. The methods utili...

The introduction of cyano groups into arom. sulfones is of interest in light of the potential uses of these materials as monomeric units in the synthesis of engineering thermoplastics. Organoiron complexes (I) were initially prepd. by reaction of p-dichlorobenzenecyclopentadienyliron with various di...

A review. Prepn. techniques and characterization of the transition metal-contg. polymers (organometallic polymers) where the metal is bonded to at least one org. group through σ- and/or π-bonds. [on SciFinder(R)]

Over the past few decades, we have seen a growing interest in the development of various classes of metal-contg. polymers. While polymers are traditionally carbon-based materials that contain only a few other elements, organometallic polymers could incorporate almost all the other elements of the pe...

Cyclic aryl ethers, thioethers or amines, and methods for synthesis are disclosed. These cyclic aryl compds. are synthesized by combining a first dinucleophile with a substituted benzene metalized electron-withdrawing complex, having halo or nitro substituent groups, to form a linear bimetalized ary...

Cyclic aryl ethers, thioethers or amines, and methods for synthesis are disclosed. These cyclic aryl compds. are synthesized by combining a first dinucleophile with a substituted benzene metalized electron-withdrawing complex, having halo or nitro substituent groups, to form a linear bimetalized ary...

As functionalization of the polynorbornene backbone has shown to be a viable route towards altering the thermal and chem. properties of the resulting polymeric material, our focus has been on the prepn. of norbornene monomers contg. a side-chain consisting of a rigid mesogen and/or an aliph. spacer....

Photolytic demetallation of cyclopentadienyliron complexes was investigated. Effects of solvent nucleophilicity, counter anion, wavelength, and nature of the arene were studied. Initial results indicate a dependence on the wavelength of the light source as well as the duration of photolysis, with de...

The topic of metal-contg. polymers is reviewed with special emphasis on the need for polymeric materials for the 21st century and the role that metal and metalloid-contg. polymers will fill. Also emphasized is the wide variety of potential polymers including varying the metal, oxidn. state of the me...

Polyethers and/or thioethers contg. organoiron moities in either the backbone or the side chain were prepd. under mild reaction conditions. Polysiloxanes contg. arene cyclopentadienyliron or ferrocene moieties were also prepd. and their morphol. thermal and spectroscopic characterizations were examd...

A review. Recent developments in organometallic polymers from the early 1990s to the present are reviewed. Various classes of organometallic polymers and their properties are discussed. The unique elec., optical, catalytic, and magnetic properties of organometallic polymers make them esp. attractive...