Few examples of [4+ 2] cycloaddition with unmasked ortho-benzoquinones (UMOBs) as
carbodiene have been reported in complex molecule synthesis. Herein we report that this …

We report the divergent synthesis of benzannulated 2, 8-dioxabicyclo [3.2. 1] octanes and 2,
3-dihydrobenzofurans using the concept of extended Corey–Chaykovsky reactions. With this …

Conspectus Tetracyclic diterpenoids (C20) mainly refer to the plant terpenoids bearing
biogenetically related carbon skeletons derived from copalyl diphosphates (ent-CPP and …

Highly substituted, tethered alkyne dipolarophiles participate in the internal 2+ 3
cycloaddition with azomethine ylides generated by treatment of oxazolium salts with cyanide …

This work reports the total syntheses of Isodon diterpenes trichorabdal A and maoecrystal Z
via a common bicyclo [3.2. 1] octane intermediate, which chemically bridges the two distinct …

The tetracyclic carbon skeleton of hainanolidol and harringtonolide was efficiently
constructed by an intramolecular oxidopyrylium-based [5+ 2] cycloaddition. An anionic ring …

The dipolar cycloaddition of azomethine ylides with suitable dipolarophiles is a powerful
method for the synthesis of pyrrolidines, pyrrolines, and pyrroles. 2 The original, and still …

A stereoselective approach to tetracyclic core of atisane diterpenoids is described. Oxidative
dearomatization, intermolecular cycloaddition of spiroepoxycyclohexa-2, 4-dieone with ethyl …

A one-pot cascade process of benzyl enoldiazoacatates, initiated by dirhodium (II)-catalyzed
intramolecular cyclopropene formation, occurs via a subsequent Buchner reaction and Cope …

Conspectus Several criteria for the measure of synthetic strategies toward “ideal synthesis”
are available to guide the design and evaluation of the synthetic strategies toward the target …