This review focuses on all known natural products that contain a “heteroatom-rich” ring
system, specifically a five-, six-or seven-membered ring that contains three or more …

Among the large number of structurally diverse alkaloids, 2, 6-disubstituted piperidine and
its analogs have often been targeted when exploiting new synthetic techniques perhaps …

Starting from a common lactam,(3 R, 8a S)-5-oxo-3-phenyl-2, 3, 6, 7, 8, 8a-hexahydro-5 H-
oxazolo [3, 2-a] pyridine (1), or its enantiomer, the enantioselective synthesis of 2 …

Reaction of (R)-phenylglycinol with methyl 5-oxopentanoate gave either bicyclic lactam cis-1
(the kinetic product) or its isomer trans-1 (under equilibrating conditions) as the major …

The expanding “toolbox” of biocatalysts opens new opportunities to redesign synthetic
strategies to target molecules by incorporating a key enzymatic step into the synthesis …

This part (part II) is devoted to 6-membered heterocycles that are synthesized from
nitroalkenes as the key substrates. These compounds can be simply accessible to form …

Even though there are dozens of biologically active 2‐substituted and 2, 6‐disubstituted
piperidines, only a limited number of approaches exist for their synthesis. Herein is …

A series of Ln (III) tris (benzhydryl) complexes [(p‐tBu‐C6H4) 2CH] 3Ln (Ln= La (1), Nd (2),
Y (3)) were synthesized by the salt metathesis reactions of LnHal3 (THF) 3.5 (Ln= La, Nd …

A method for the preparation of novel oxaza and diaza polycyclic 9-oxa-4-azaphenanthrene,
5 H-pyrido [2, 3-a] pyrrolizine, 5 H, 6 H-pyrido [3, 2-g] indolizine, and 5 H, 6 H-indeno [2, 1-a] …

Both 2, 6-cis-and 2, 6-trans-piperidines were prepared from common substrates through
organocatalytic aza-Michael reactions promoted by the gem-disubstituent effect in …