Metal-catalyzed coupling process comprising reacting a compound of general formula 1 with a compound A-X, to obtain a compound of general formula 2, which may further be converted to a compound of general formula 3
SILICON BASED DRUG CONJUGATES AND METHODS OF USING SAME
申请人:BlinkBio, Inc.
公开号:US20170202970A1
公开(公告)日:2017-07-20
Described herein are silicon based conjugates capable of delivering one or more payload moieties to a target cell or tissue. Contemplated conjugates may include a silicon-heteroatom core, one or more optional catalytic moieties, a targeting moiety that permits accumulation of the conjugate within a target cell or tissue, one or more payload moieties (e.g., a therapeutic agent or imaging agent), and two or more non-interfering moieties covalently bound to the silicon-heteroatom core.
Disclosed is a cyclic carbodiimide compound useful as an end-capping agent for polymer compounds. The cyclic carbodiimide compound is represented by the following formula (i):
wherein X is a specific divalent group or tetravalent group, q is 0 when X is a divalent group, while q is 1 when X is a tetravalent group, and Ar
1
to Ar
4
are selected from aromatic groups each independently optionally substituted with a group that serves as X.
Method for making 5-membered ring compounds containing N, 0 or S atoms by reacting certain (thio)cyanate or cyanamide salts with compounds having NH2, OH or SH functionality vicinal to an-NH2 group, in the presence of an acid except where said cyanate is an ammonium salt.
制造含有 N、0 或 S 原子的五元环化合物的方法,在酸的存在下,通过使某些(硫代)氰酸酯或氰酰胺盐与具有 NH2、OH 或 SH 官能的化合物在 NH2 基团附近发生反应,但所述氰酸酯为铵盐的情况除外。
Pyridazine <i>N</i>-Oxides as Precursors of Metallocarbenes: Rhodium-Catalyzed Transannulation with Pyrroles
Pyridazine N-oxides are used for the first time as precursors of metallocarbenes. These nitrogen-rich heterocycles led to the discovery of a novel acceptor and donor-acceptor enalcarbenoids. The synthetic utility of these metallocarbenes was demonstrated in the rhodium-catalyzed denitrogenative transannulation of pyridazine N-oxides with pyrroles to the valuable alkyl, 7-aryl, and 7-styryl indoles. The transannulation strategy was applied to the synthesis of a potent anticancer agent.