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Briarane-type diterpenoids from the Okinawan soft coral Pachyclavularia violacea.
- Junya Iwasaki, H. Ito, M. Aoyagi, Y. Sato, K. Iguchi
- Biology, Medicine
- Journal of natural products
Four new briarane-type diterpenoids, pachyclavulides A (1), B (2), C (3), and D (4), were isolated from the Okinawan soft coral Pachyclavularia violacea. The structures of these compounds were… Expand
A synthetic study of briarane-type marine diterpenoid, pachyclavulide B
Enantioselective preparation of the six-membered ring of pachyclavulide B, a briarane-type diterpenoid, was achieved. The key step is desymmetrization of an achiral symmetric substrate by… Expand
Total synthesis of the proposed structure of a polyketide from Phialomyces macrosporus.
- H. Abe, Satoko Itaya, Kei Sasaki, Toyoharu Kobayashi, H. Ito
- Chemistry, Medicine
- Chemical communications
- 12 February 2015
Total synthesis of the proposed structure of a polyketide isolated from Phialomyces macrosporus is described. The synthesis involved chemoselective epoxidation, regioselective epoxide ring opening,… Expand
A Direct Catalytic Enantioselective Aldol Reaction via a Novel Catalyst Design
Asymmetric Aldol Reaction via a Dinuclear Zinc Catalyst: α-Hydroxyketones as Donors
Asymmetric Claisen rearrangement
Development of the asymmetric Claisen rearrangement is one of the challenging tasks in synthetic organic chemistry. There have been numerous reports of the asymmetric Claisen rearrangement based on… Expand
Enantioselective total synthesis of (+)-tricycloclavulone.
- H. Ito, M. Hasegawa, Y. Takenaka, Tatsuya Kobayashi, K. Iguchi
- Chemistry, Medicine
- Journal of the American Chemical Society
- 18 March 2004
The first total synthesis of (+)-tricycloclavulone having a unique tricyclo[5,3,0,01,4]decane skeleton and six chiral centers was achieved in a highly stereoselective manner. It includes a catalytic… Expand
Zirconium-mediated, highly diastereoselective ring contraction of carbohydrate derivatives : synthesis of highly functionalized, enantiomerically pure carbocycles
Formation of Carbon-Carbon Bonds using Zirconocene-Butene Complex (”Cp2Zr”) as a Synthetic Tool
A stereoselective preparation of 1-fluorocyclopropane-1-carboxylate derivatives through radical addition of fluoroiodoacetate to alkenes followed by intramolecular substitution reaction
Abstract Triethylborane mediated iodine atom-transfer radical addition of fluoroiodoacetate to 1-alkene or cyclic alkene proceeded in a good yield to give the α-fluoro-γ-iodo esters in… Expand