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Cytogenetic comparison of two poorly differentiated human lung squamous cell carcinoma lines.
This paper presents a cytogenetic analysis of two established but early-passage (passages 5 and 18) cell lines derived from histologically similar, poorly differentiated lymph node metastases ofExpand
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Concise syntheses of (-)-galanthamine and (+/-)-codeine via intramolecular alkylation of a phenol derivative.
Suzuki coupling of 7 to 8 gave the biphenyl derivative 9. Reaction of 9 with ethyl vinyl ether/bromine/base gave 10, which on treatment with CsF/DMF at 130 degrees C resulted in the cross-conjugatedExpand
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Synthesis of the Kopsia alkaloids (±)-pauciflorine B, (±)-lahadinine B, (±)-kopsidasine, (±)-kopsidasine-N-oxide, (±)-kopsijasminilam and (±)-11-methoxykopsilongine
Abstract Pictet–Spengler condensation of 13 with tryptamine gave 14 , which was converted into 17 . Treatment of 17 with phenyl chloroformate resulted in 18 , which underwent transannular cyclizationExpand
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Multinuclear luminescent Schiff-base Zn-Nd sandwich complexes.
Multinuclear 3d-4f complexes with sandwichlike molecular structures are formed with the Schiff-base ligand bis(3-methoxysalicylidene)ethylene-1,2-phenylenediamine(H(2)L). The stoichiometry andExpand
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Novel 2- and 5-azido-N-(diphenylcarbamoyl)proline methyl esters. Examples of a novel proline oxidation.
The crystal structures of two azido-substituted proline derivatives are reported. Racemic 2-azido-1-(diphenyl-carbamoyl)proline methyl ester, (I), C19H19N5O3, is resolved upon crystallization fromExpand
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pK(a) values and geometries of secondary and tertiary amines complexed to boronic acids-implications for sensor design.
[structure in text] The pK(a) values and the geometries of secondary and tertiary amines adjacent to boronic acids were determined using potentiometric and (11)B NMR titrations. The studies showedExpand
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An expedient formal total synthesis of (-)-diazonamide A via a powerful, stereoselective O-aryl to C-aryl migration to form the C10 quaternary center.
During the course of studies on the synthesis of diazonamide A 1, an unusual O-aryl into C-aryl rearrangement was discovered that allows partial control of the absolute stereochemistry of the C-10Expand
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Design and synthesis of a near infra-red luminescent hexanuclear Zn-Nd prism.
The use of the Schiff-base ligand N,N'-bis(5-bromo-3-methoxysalicylidene)propylene-1,3-diamine (H2L) and 1,4-benzenedicarboxylate (BDC) enables the construction of the hexanuclear luminescent Zn-NdExpand
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