The marineantibiotic korormicin, isolated from the culture filtrate of marine bacterial strain Pseudoalteromonas sp. F-420, specifically inhibits the growth of marine Gram-negative bacteria without affecting terrestrial species. The absolute configuration of korormicin was determined by the combination of a CD exciton chirality method and chemical degradation. Convergent total synthesis of koromicin
Enantioselective Generation and Diastereoselective Reactions of Chiral Enolates Derived from ?-Heterosubstituted Carboxylic Acids. Preliminary Communication
作者:Dieter Seebach、Reto Naef
DOI:10.1002/hlca.19810640829
日期:1981.12.16
Dioxolanones 7 and 8a and oxazolinones 9a derivedfrom pivalaldehyde and lactic acid, mandelic acid, and proline, respectively, furnish chiral enolates of type 3 by deprotonation with LDA. Reactions of these enolates with alkyl halides, aldehydes, and ketones ( 8b, 9b, 11–13) are highly diastereoselective. Thus, the overall enantioselective α-alkylation of chiral, non-racemic α-heterosubstituted carboxylic
Total Synthesis and Determination of the Absolute Configuration of Parimycin
作者:Day-Shin Hsu、Jiun-Yi Huang
DOI:10.1021/acs.orglett.9b02999
日期:2019.9.20
synthetic steps. Intermolecular Diels–Alder reaction of 6 with diene 7, cyclodehydrogenation catalyzed by iodine-dimethyl sulfoxide, and sodium dithionite reduction were the key steps. The absoluteconfiguration of natural parimycin was determined to be S.
[EN] (METHYLSULFONYL)PHENYL-2-(5H)-FURANONES AS COX-2 INHIBITORS<br/>[FR] (METHYLSULFONYL)PHENYL-2-(5H)-FURANONES EN TANT QU'INHIBITEURS DU COX-2
申请人:MERCK FROSST CANADA INC.
公开号:WO1997014691A1
公开(公告)日:1997-04-24
(EN) The invention encompasses the novel compound of formula (I) useful in the treatment of cyclooxygenase-2 mediated diseases. The invention also encompasses certain pharmaceutical compositions for treatment of cyclooxygenase-2 mediated diseases comprising compounds of formula (I).(FR) Cette invention, qui porte sur le nouveau composé répondant à la formule (I), composé s'avérant efficace dans le traitement de maladies liées à la cyclo-oxygénase-2, a également trait à certaines compositions pharmaceutiques qui, contenant des composés de ladite formule (I), servent à traiter lesdites maladies.
[EN] 3,4-DIARYL-2-HYDROXY-2,5-DIHYDROFURANS AS PRODRUGS TO COX-2 INHIBITORS<br/>[FR] 3,4-DIARYLE-2-HYDROXY-2,5-DIHYDROFURANS UTILISES COMME PROMEDICAMENTS POUR INHIBITEURS DE COX-2
申请人:MERCK FROSST CANADA INC.
公开号:WO1997016435A1
公开(公告)日:1997-05-09
(EN) The invention encompasses the novel compound of formula (I) useful in the treatment of cyclooxygenase-2 mediated diseases. The invention also encompasses certain pharmaceutical compositions for treatment of cyclooxygenase-2 mediated diseases comprising compounds of formula (I).(FR) L'invention se rapporte à un nouveau composé de la formule (I) utile dans le traitement de pathologies induites par la cyclooxygénase-2. L'invention se rapporte également à certaines compositions pharmaceutiques destinées au traitement de pathologies induites par la cyclooxygénase-2 et comprenant les composés de la formule (I).