Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(a) X-ray structure of (R,P,Sa)-1. Left: front view; right: top view. Ellipsoids set at 50% probability. Hydrogen bond lengths (intra: H101–O1 1.874 Å, inter: H100–O1′ 1.826 Å) and oxygen–oxygen distances (intra: O1–O2 2.629 Å, inter: O1–O2′ 2.685 Å). (b) Newman projections. Left: top view through overcrowded alkene bond. Right: top view through aryl–aryl bond of biaryl unit. Torsional angles of alkene unit (13.92°) and biaryl unit (55.71°) are shown.
