A new cytokinin from the fruits of zantedeschiaaethiopica

A new purine derivative with cytokinin activity was isolated from the cuckoo-pint fruits ($\text{Zantedeschia}$$\text{aethiopica}$) and identified as 6-(o-hydroxybenzylamino)-2-methylthio-9-β-D-glucofuranosylpurine $\text{1}$.     

Steroidal antifeedants from the dorid nudibranch Aldisasanguineacooperi

Two steroids, 3-oxo-chol-4-ene-24-oic acid ($\text{2}$) andi ts unsaturated analog $\text{4}$ have been isolated from the dorid nudibranch $\text{Aldisa}$$\text{sanguinea}$$\text{cooperi}$, and the acid $\text{2}$ has been shown to have antifeedant properties.     

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.     

Empirical determination of medium effects on the equilibrium between transcis and transtrans 1,2-dibromo-4-t-butylcyclohexanes

Head space analysis, GLC retention time data, and solution calorimetry are used to determine the effect of medium on the thermodynamic parameters for the equilibrium (1) ? (2). It is shown that changes in ΔG° and ΔH° can be evaluated for the transfer of the equilibrium from a series of solvents to the gaseous phase which is used as the reference medium.     

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.     

Use of 13C spin-lattice relaxation measurements to determine the structure of a tetrabromo diphenyl ether from the sponge Dysideaherbacea

The structure of a novel tetrabromodiphenyl ether from $\text{D}$. $\text{herbacea}$ is solved principally by analysis of the contributions of non-bonded hydrogens to the spin-lattice relaxation times of quaternary carbons.     

The alkaloids of Delphiniumbicolor nutt.

The structures of alkaloid-$\text{A}$ and -$\text{B}$ were established via X-ray crystallography of the former as its HI salt, and its chemical conversion to the latter.     

Biosynthesis of an isonitrile acid from trichodermahamatum

The amino acid tyrosine has been shown to be the specific precursor of the isonitrile acid $\text{1}$ produced by $\text{Trichoderma}$$\text{hamatum}$ (Bon.) Bain. aggr.     

Highly substituted chromanols from cultures of aspergillusduricaulis

The new compounds $\text{1}$ – $\text{4}$ and $\text{8}$ have been isolated from cultures of $\text{Aspergillus}$$\text{duricaulis}$