Special Topic 6.8 Photochemotherapy treatment of psoriasis

Case Study 6.12 Organic synthesis - construction of the AB-ring core of paclitaxel 

Photochemistry of cross-conjugated cyclohexa-2,5-diones has historically served to explain the mechanism of some primary photochemical processes774 and later it has been successfully utilized in organic synthesis. In general, bicyclo[3.1.0]hex-3-en-2- 

Explain the following concepts and keywords photostationary state Rydberg state NEER principle bicycle-pedal mechanism phototransduction phototherapy photochemical deracemization enantiodifferentiating photosensitization photochromism di-Tt-methane rearrangement asymmetric photochemical synthesis single-crystal-to-single-crystal photochemistry photochemotherapy rule of five. 

The electronic structure of the lowest excited states of planar aromatic compounds is well described by MO theory (Sections 4.5 and 4.7). Benzenoid aromatic hydrocarbons exhibit three or four7t,7t absorption bands in the near-UV region, which are labelled Lb,1 La, 1 Bb 

The fluorescence rate constants of aromatic compounds predicted by Equation 2.11 differ by about two orders of magnitude depending on the nature of the lowest singlet state the smaller representatives with S i 1 Lb have iffs2x 106 s 1 and the larger ones with 

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