Chemoenzymatic preparation of the p-menth-1,5-dien-9-ol stereoisomers and their use in the enantiospecific synthesis of natural p-menthane monoterpenes
作者:Stefano Serra、Igor Nobile
DOI:10.1016/j.tetasy.2011.07.014
日期:2011.7
alcohols gave the isomeric forms of the terpenes dill and epi-dillether, which were hydrogenated diastereoselectively to the corresponding (1R)- or (1S)-derivatives depending on the catalyst used. The oxidation of the latter ethers turned out to be stereoselective, affording either the corresponding p-menthan-9-oic lactone or the keto-acid derivatives depending on the starting isomer used.
Naturalp-Menthene Monoterpenes: Synthesis of the Enantiomeric Forms of Wine Lactone, Epi-wine Lactone, Dill Ether, and Epi-dill Ether Starting from a Common Intermediate
作者:Stefano Serra、Claudio Fuganti
DOI:10.1002/hlca.200490189
日期:2004.8
A concise synthesis of the enantiomericforms of winelactone (5), epi-winelactone (14), dillether (6), and epi-dillether (15) was accomplished startingfrom the enantiomericforms of p-mentha-1,8(10)-diene-3,9-diol (8) (Scheme 3). The latter compounds were previously prepared in high optical purity by means of lipase-mediated kinetic resolution, and they were the common building blocks for this
PROCESSES FOR PRODUCTION OF WINE LACTONE AND ITS INTERMEDIATES AND APPLICATION OF THE LACTONE
申请人:SAN-EI GEN F.F.I., INC.
公开号:EP1787975A1
公开(公告)日:2007-05-23
The present invention provides a method for producing wine lactone, a method for producing intermediates that are usable in production of wine lactone, and techniques for the application of wine lactone. The method for producing the wine lactone (Compound (6)) of the present invention comprises the following steps (A) to (E):
wherein R1 is a C1-4 lower alkyl group.
Total Synthesis of Racemic Laurenditerpenol, an HIF-1 Inhibitor
作者:Michael E. Jung、G-Yoon Jamie Im
DOI:10.1021/jo902029x
日期:2009.11.20
The convergent total synthesis of the HIF-1 inhibitor laurenditerpenol 1 and its diastereomer 1' is reported. The key step involves the Julia-Kocienski olefination-reduction process between the sulfone 55 and the aldehyde 54. The unusual trimethylated oxanorbornane sulfone 55 was successfully synthesized from the known exo Diels-Alder adduct 24 of 2,5-dimethylfuran 7 and maleic anhydride 23 in 8 steps. The aldehyde 54 was prepared by ring-opening and elaboration of lactone 41. In addition, four analogues of I were also successfully synthesized for biological testing.
Kitagawa, Isao; Tsujii, Shinji; Nishikawa, Fumiko, Chemical and pharmaceutical bulletin, 1983, vol. 31, # 8, p. 2639 - 2651