English to Russian Tech/Engineering Chemistry; Chem Sci/Eng

Many Intermediates and Examples are homochiral (entirely or mostly a single enantiomer), but in some cases the absolute configuration has not been proven. In those cases, a text notation to the left of the structure will indicate that the compound is homochiral, and indicates whether the compound was obtained from (or is derived from an intermediate which was obtained from) the *****specified peak eluting***** during chiral SFC separation. However, in all cases, the stereochemistry within the tricyclic ring system is cis. Thus, for example, the structure 42 shown below indicates that, while the material is homochiral, the absolute stereochemistry of the material, which was derived from the second-eluting peak during SFC separation, is not known, but is either the absolute stereochemistry shown in 42a or that shown in 42b