The aldol reaction is one of the most important methods for the stereoselective construction
of polyketide natural products, not only for nature but also for synthetic chemistry. The …

Covering: 1989–2017 Saponins are characteristic metabolites of starfish and sea
cucumbers, and occasionally are also found in sponges, soft coral, and small fish. These …

A highly efficient, mild, and simple protocol is presented for the oxidation of aldehydes to
carboxylic acids utilizing Oxone as the sole oxidant. Direct conversion of aldehydes in …

The use of dimethyl sulfoxide as an oxidizing agent began with the discoveries by Kornblum
and co‐workers that certain α‐bromo ketones were converted into glyoxals under mild …

OSW-1 (1), an acylated disaccharide cholestane saponin from Ornithogalum saudersiae
with exceptionally potent antitumor activity, was first synthesized from commercially …

The selective formation of bondings between molecules is one of the major challenges in
organic chemistry, and the so-called aldol reaction is one of the most important for this …

Trimethylsilyl triflate with or without added hindered tertiary amines catalyzes directed
condensation of enol trimethylsllyl ethers with acetals, orthoformate, or 2 …

The genus Ornithogalum L. belongs to the subclass Monocotyledonae and was originally
classified in the family Liliaceae, 1 but was later transferred to Hyacinthaceae. 2, 3 About …

Asymmetric hydroformylation of conjugated dienes has been investigated using (R, S)-
BINAPHOS-Rh (I) complex as a catalyst [(R, S)-BINAPHOS=(R)-2-(diphenylphosphino)-1 …

The development of oxochromium (VI)‐amine reagents as oxidants in organic synthesis has
evolved since the early studies of Sisler which described the use of adducts of heterocyclic …