Switch in asymmetric induction sense in cycloadditions using camphor-based nitroso dienophiles
摘要:
We have observed a unique reversal in the absolute stereochemistry of the principal adducts from the cycloadditions of camphor-based acylnitroso dienophiles as compared to the adducts obtained through reactions of the corresponding camphor-based chloronitroso compounds. (C) 2002 Elsevier Science Ltd. All rights reserved.
Switch in asymmetric induction sense in cycloadditions using camphor-based nitroso dienophiles
摘要:
We have observed a unique reversal in the absolute stereochemistry of the principal adducts from the cycloadditions of camphor-based acylnitroso dienophiles as compared to the adducts obtained through reactions of the corresponding camphor-based chloronitroso compounds. (C) 2002 Elsevier Science Ltd. All rights reserved.
Syntheses of Optically Pure Conduramines via the Strategy of Hetero Diels−Alder Reaction of Masked <i>o</i>-Benzoquinones with Homochiral Nitroso Dienophiles
Highly stereoselective hetero Diels−Alderreactions of masked o-benzoquinones (MOBs) with homochiral nitroso dienophiles are described along with their application in the syntheses of (+)-ent-conduramine F-1, (+)-conduramine E-1, (−)-conduramine A-1, (+)-conduramine A-1 tetraacetate, and (−)-ent-conduramine A-1 tetraacetate.
描述了被掩盖的邻苯甲醌(MOB)与同手性亚硝基二烯亲和体的高度立体选择性杂Diels-Alder反应及其在(+)- ent -conduramine F-1,(+)-conduramine E-1,( -)-conduramine A-1,(+)-conduramine A-1四乙酸盐和(-)- ent -conduramine A-1四乙酸盐。