Highly Branched Alkanoic Acids from the Preen-Gland Wax of the Domestic Goose as Building Blocks for Chiral Triphenylenes
作者:Andreas Schultz、Sabine Laschat、Michael Morr、Siegmar Diele、Michael Dreyer、Gerhard Bringmann
DOI:10.1002/1522-2675(200211)85:11<3909::aid-hlca3909>3.0.co;2-r
日期:2002.11
The synthesis of chiral triphenylenes 7a,b bearing side chains derived from enantiomerically pure trimethyloctanoate la and tetramethyldecanoate 1b from the preen-gland wax of domestic goose was achieved in 3 or 4 steps. Compounds 7a,b were nonmesogenic; however, mixtures of 7a,b with hexakis(octyloxy)triphenylene or hexakis(decyloxy)triphenylene displayed columnar mesophases or soft crystal G phases, as was shown by differential-scanning calorimetry and optical-polarizing microscopy. Circular-dichroism measurements revealed weak associations of 7a,b in solution.