carbon, and both its enantiomers have been found in nature. Enantiomericpure (+)-(1) and (−)-(1) were successfully prepared by racemic synthesis followed by enantiomeric separation in a chiral HPLC system. Their absolute configurations were clarified by the vibrational circular dichroism technique using their methyl esters 2 and lactones3. Their inhibitory activities against the interaction of p53–HDM2
Verbesserte fotografische Eigenschaften erhält man, wenn das fotografische Silberhalogenidmaterial ein Copolymerisat mit Polypeptidsegmenten enthält, wobei sich die Polypeptidsegmente von Polypeptiden mit einem mittleren Molekulargewicht Mw von 2 000 bis 40 000 ableiten.