Peroxy Bond Circular Dichroism Of Two Compounds Of 8804 And 8807 Related To The Work Of Three, The Work Of The Talons

Organie endoperoxides have CD absorption~1In this paper. we investigatea nardosinon and ergostrol endoperoxide and their reduction products The results support the previous observation~1 that right handed twist of the endoperoxide linkage gives rise to positive Cotton effect and vice versa.Compounds 8804 and 88807 were first isolat-ed from the crude extracts of the heros, whicn have very interesting chemical structures not reported before we investigated the poss-ibilties of their total tynthesis and finally founa that they are products of the reaetion between acetone and ammonia with the intervention of atmospheric oxygen.Yingzhaosu c was isolated from the stems and roots of Artabotrys uneinatus(?) ) Mer(?) and its structure was elucidated by chemical and spectral analysis.