NaIO4-mediated sequential iodination/amidation reaction of N-alkyl quinolinium iodide salts has been first developed. This cascade process provides an efficient way to rapidly synthesize 3-iodo-N-alkyl quinolinones with high regioselectivity and good functional group tolerance. This protocol was also amenable to the isoquinolinium salts, thus providing a complementary method for preparing the 4-iodo-N-alkyl
[EN] SUBSTITUTED TRICYCLIC AMIDES, ANALOGUES THEREOF, AND METHODS USING SAME<br/>[FR] AMIDES TRICYCLIQUES SUBSTITUÉS, ANALOGUES DE CEUX-CI ET PROCÉDÉS LES METTANT EN OEUVRE
申请人:ARBUTUS BIOPHARMA CORP
公开号:WO2021229302A1
公开(公告)日:2021-11-18
The present disclosure includes substituted tricyclic amides, or analogues thereof of formula (I) (I), wherein X, Y, ring A, R1, R5, R6 and R7 are as defined herein, and compositions comprising compounds of formula (I) that can be used to treat or prevent hepatitis B virus (HBV) and/or hepatitis D virus (HDV) infections in a patient.
Preparation of N-(β-acetoxyethyl) anabasine,-brucine, -strychnine, and -cocaine iodides and a study of some of their biological properties
作者:L. A. Srybnaya、Z. Tulyabaev、A. A. Sadykov、D. N. Dalimov
DOI:10.1007/bf00597873
日期:1990.5
These acetoxyethylammonium iodides were obtained by keeping alcoholic solutions of the alkaloids with the calculated amount of $-iodoethyl acetate [3] at room temperature for several days. Then the solvent was partially eliminated and the reaction product was precipitated by the addition of an excess of ethyl ether. The substances were purified by recrystallization from a mixture of absolute alcohol
(3aS∗,1aR∗)-1a-Methoxy-3a-methoxycarbonyl-2,3,4,5,6,3a-hexahydrocyclopenta[1,2-b]furan was prepared in 96% overall yield from 2-methoxycarbonylated cyclopenta-1-one in two steps. This furan derivative is used as a divergent intermediate in the synthesis of our originally designed chiral resolving agents having various substitutions. During the preliminary evaluation of divergent synthetic products
(3 -a S ∗,1a R ∗)-1a-Methoxy-3a-methoxymethoxy-2,3,4,5,6,3a-hexahydrocyclopenta [1,2- b ]呋喃以2-甲氧基羰基化反应的总收率为96%制备两个步骤中的cyclopenta-1-one。该呋喃衍生物在我们最初设计的具有各种取代基的手性拆分剂的合成中用作发散中间体。在对各种合成产物进行初步评估时,发现3a-(芴-9-亚甲基)-2,3,4,5,3a-五氢环戊[1,2- b ]呋喃是一种显着改进的手性拆分剂。用于仲醇。
Integrin receptor inhibitors
申请人:GENENTECH, INC.
公开号:US20020035104A1
公开(公告)日:2002-03-21
Provided are compounds of formula (I)
1
wherein A, Q, W, X, Y, Z, R
1
to R
4
, m and n are as defined herein. Compounds of the invention bind to &agr;
4
integrin receptors and thereby inhibit binding of ligands for &agr;
4
integrins which is useful for prophylactic and/or therapeutic treatment of diseases and conditions associated with &agr;
4
integrins or their ligands.