Abstract

Abstract Two natural unsaturated fatty acids with aspargyl protease inhibition activity were synthesized for the first time. The stereogenic centers were installed by using Brown asymmetric allylation or chiral building blocks derived from d -glucose, respectively. The conjugate diene unit was introduced via an HWE reaction. The geometry of the C C double bonds was clearly shown to be (E) by 1H NMR in C6D6. The spectroscopic data for the synthetic samples were in excellent consistency with those reported for the corresponding natural ones. The optical rotations were also compatible with those for the natural ones. The absolute configurations for natural YF-0200R A and B thus could be reliably assigned as (8S) and (8S,10S), respectively.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.