Synthesis of alkynyl-substituted camphor derivatives and their use in the preparation of paclitaxel-related compounds

• M. Fernanda N. N. Carvalho,
• Rudolf Herrmann and
• Gabriele Wagner

Beilstein J. Org. Chem. 2017, 13, 1230–1238, doi:10.3762/bjoc.13.122

• reduction, and ring enlargement. One isomeric dialkyne additionally allows for the isolation of a pentacyclic compound lacking the ring enlargement step, which we have proposed as a potential intermediate in the catalytic cycle. Keywords: alkynes; camphor derivatives; catalysis; cycloisomerisation

• positions. In addition, where taxol has the bridgehead hydroxy and its neighbouring benzoate groups, we find the heterocyclic reduced isothiazole ring in the product of the Pt(II) catalysis. Other camphor derivatives prepared as entrance to taxoid compounds have a carbocyclic ring at this place in the

Strecker degradation of amino acids promoted by a camphor-derived sulfonamide

• M. Fernanda N. N. Carvalho,
• M. João Ferreira,
• Ana S. O. Knittel,
• Maria da Conceição Oliveira,
• João Costa Pessoa,
• Rudolf Herrmann and
• Gabriele Wagner

Beilstein J. Org. Chem. 2016, 12, 732–744, doi:10.3762/bjoc.12.73

• Molden [42]. Camphor and some camphor derivatives. ESI mass spectrum of 2 (positive ion mode). 1H NMR spectrum of 2 in CD3CN at T = −20 °C. 13C NMR spectrum of 2 in CD3CN at T = −20 °C. Optimized structure of 2 ((S)-3A isomer) with labeling scheme. NOESY spectrum (detail) showing the cross peak between

Synthesis and photooxidation of styrene copolymer bearing camphorquinone pendant groups

• Branislav Husár,
• Norbert Moszner and
• Ivan Lukáč

Beilstein J. Org. Chem. 2012, 8, 337–343, doi:10.3762/bjoc.8.37

• aerated glassy polymer matrix. Synthesis of MCQ from (±)-10-camphorsulfonic acid (1). Only one enantiomer of each compound is depicted. Photooxidation of CQ in aerated glassy PS matrix. Proposed mechanism of MCQ/S photochemistry. Values of melting points of synthesized racemic camphor derivatives and