• Bulletin of the Korean Chemical Society
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• v.28 no.10
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• pp.1739-1745
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• 2007

A new methodology for the preparation of pyranochromenes was developed starting from substituted trihydroxybenzenes. This methodology was applied successfully to the total synthesis of biologically interesting compounds, clusiaphenone A, octandrenolone, O-methyloctandrenolone, trans-3''',4'''-dihydro- 3''',4'''-dihydroxy-O-methyloctandrenolone, trans-3'',4''-dihydro-3'',4''-dihydroxy-O-methyloctandrenolone, flemiculosin, laxichalcone, and racemic 3-deoxy-Ms-II.

• Natural Product Sciences
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• v.4 no.4
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• pp.185-202
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• 1998

A large number of chemical constituents have been reported from the Himalayan yew [Taxus baccata (Linn) or T. wallichiana (Zucc)]. These constituents are mainly taxoids and phenolics. Taxol, a lead anticancer agent, is the most important constituent. Other compounds have also been found to possess interesting biological properties. The literature concerning the chemistry and bioactivity of the constituents of the Himalayan yew has been briefly reviewed.

• Bulletin of the Korean Chemical Society
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• v.31 no.3
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• pp.557-558
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• 2010

• Bulletin of the Korean Chemical Society
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• v.29 no.4
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• pp.863-865
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• 2008

• Bulletin of the Korean Chemical Society
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• v.32 no.1
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• pp.319-320
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• 2011

• Bulletin of the Korean Chemical Society
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• v.28 no.5
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• pp.877-879
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• 2007

• Natural Product Sciences
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• v.4 no.4
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• pp.238-240
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• 1998

A new lignan, gossypiline (1) has been isolated from the aerial parts of Jatropha gossypifolia. The structure of 1 was established from its spectral data. The conversion of isogadain, a known lignan, to 1 confirmed the structure as well as the stereochemistry of 1.

• Bulletin of the Korean Chemical Society
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• v.9 no.3
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• pp.135-136
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• 1988

Cleavage of exo-7-substituted-6,8-dioxabicyclo[3.2.1]octanes with acetyl iodide in the predominance of the trans alkene product. This bicyclic ketal fragmentation methodology is utilized to a formal synthesis of sirenin.

• Bulletin of the Korean Chemical Society
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• v.21 no.7
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• pp.712-714
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• 2000

Non-Lorentyian resonance is predicted to occur in two-photon photoabsorption processes due to the detuning off the intermediate levels. This type of non-Lorentzian resonance is distinct from the asymmetric resonance resulting from the effects of q uantum interference between competing indistinguishable dynamic pathways. The product distributions are shown to be constant near this type of resonance.

• Bulletin of the Korean Chemical Society
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• v.11 no.6
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• pp.516-520
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• 1990

The product distribution obtained by the addition of hydride of $-CR_2CN$ (R = H and Me) to (disubstituted benzene)-$FeCp^+$ is studied. The formation of the substituted arene from ${\eta}^5$-cyclohexadienyl-${\eta}^5$-cyclopentadienyliron is described.