Structure of cinerarin, a tetra-acylated anthocyanin isolated from the blue garden cineraria,

Structure of cinerarin is determined to be 3-0-(6-0-malonyl-β-D-glucopyranosyl)-7-0-(6-0-(4-0-(6-0-caffeyl-β-D-glucopyranosyl)caffeyl)-β-D-glucopyranosyl)-3′-0-(6-0-caffeyl-β-D-glucopyranosyl)delphinidin.     

Stereocontrolled (E,Z and erythro, threo) synthesis of ⊙-hydroxyallylic sulphides

All four isomers of substituted 3-alkylthio-4-hydroxybutenes have been synthesised: both the geometry of the double bond and the relative stereochemistry of the two chiral centres are controlled.     

Structure of monardaein,a bis-malonylated anthocyanin isolated from golden balm, monarda didyma

Structure of monardaein was determined to be 3-0-(6-0-$\text{trans}$-p-coumaryl-β-D-glucopyranosyl)-5-O- (4,6-di-O-malonyl-β-D-glucopyranosyl) pelargonidin (1).     

Diastereoselective synthesis of N-acetyl-D,L-acosamine and N-benzoyl-D,L-ristosamine

N-Acyl derivatives of $\text{D}$,$\text{L}$-acosamine and $\text{D}$,$\text{L}$-ristosamine were synthesized with high stereo selectivity utilizing intramolecular Michael addition of γ- and δ-carbomoyloxy-α,β-unsaturated esters.     

[2+2] Cycloaddition of benzyne to cis,trans- and cis,cis-1,5-cyclooctadiene

The relative rates of formation of $\text{cis}$ and $\text{trans}$ [2+2]cycloadducts of benzyne to $\text{cis}$, $\text{trans}$- and $\text{cis}$, $\text{cis}$-1,5-cyclooctadiene, $\text{trans}$- and $\text{cis}$-cyclooctene are discussed and properties of the adducts (e.g., their unusual hydrogenation) are described.     

New highly oxidized fusicoccane diterpenoids from the liverwort plagiochilaacanthophylla subsp. japonica

Four novel fusicoccane diterpenoids, fusicoplagins A, B, C, and D, have been isolated from the liverwort $\text{Plagiochila}$$\text{acanthophylla}$ subsp. $\text{japonica}$ and the structures determined by spectroscopic methods, chemical transformations, and X-ray crystallographic analysis.     

Structure elucidation and synthesis of a new anticoccidial substance isolated from streptomycesauranticolor

The structure elucidation and synthesis of WS 5995, produced by $\text{Streptomyces}$$\text{auranticolor}$, were described.     

Structure of koumine,an alkaloid from gelsemiumelegans benth

The structure of koumine, an indole alkaloid from $\text{Gelsemium}$$\text{elegans}$ Benth., was determined by a X-ray crystallographic study.     

Inhibitors of Ornithine Carbamoyltransferase from Pseudomonassyringae pv. phaseolicola. st]Revised Structure of Phaseolotoxin

The structure of phaseolotoxin, a toxin produced by cultured $\text{Pseudomonas}$$\text{syringae}$ pv. $\text{phaseolicola}$, the causal agent of halo blight disease in bean plants is revised to 3. The structure of octicidin, isolated from leaves of bean plants infected with pv. $\text{phaseolicola}$. has been determined to be 4, a protease degradation product of 3 which is formed in the plant.     

Structure of cypridina biluciferyl,a dimer of cypridina luciferyl radical having bioluminescent activity

Structure of $\text{Cypridina}$ biluciferyl (luciferyl radical dimer), which is produced by chemical oxidation of $\text{C}$. luciferin with such as ferricyanide, was determined to be the symmetric 5,5′-dimer of $\text{C}$. luciferin. It gives light in the presence of $\text{C}$. luciferase, although the bioluminescent rate is very low. We suggest that the biluciferyl is an intermediate in the oxidation of the luciferin to $\text{C}$. luciferinol.     

Die Schwingungsspektren der isomeren Komplexe N,N′-Bis(dimethylgallium)-cis- und trans-N,N′-dimethyloxamideine kritische Analyse

Reaction of Ga(CH₃)₃ with N,N′-dimethyloxamide affords two isomeric N,N′-bis(dimethylgallium)-N,N′-dimethyloxamide complexes, characterized by crystal structure analysis as having cis-and trans-configuration with respect to the central oxamide CC bond and belonging to the point groups C_2v (cis) and C_2h (trans), respectively. Both isomers which are formed in varying ratio, depending upon the reaction conditions, have been isolated in pure form; their vibration spectra (IR/RE) are analyzed in detail in points of alternative behaviour, and are assigned in all bands, especially in the G-C and Ga-X frequency region. The assignment receives further confirmation from a comparison with the vibrational data of the homologous N,N′-bis(dimethylgallium)oxamide (cis/trans isomer mixture).     

Autorecycling oxidation of alcohol catalyzed by 1,3,7,9,11,12,14-heptazapentacene-2,4,8,10 (14H,3H,9H,12H)-tetraones (mixed flavins)

1,3,7,9,11,12,14-Heptazapentacene-2,4,8,10 (14$\text{H}$,3$\text{H}$,9$\text{H}$,12$\text{H}$)-tetraones (mixed flavins) were prepared by the cyclization of 1,5-dihydro-8-[N-alkyl-N-(5-nitrouracil-6-yl)-amino-5-deazaflavins with Vilsmeier reagent. The mixed flavins oxidized alcohol under neutral condition in sunlight and a remarkable autorecycling was observed.