16657-07-1Relevant articles and documents
S1P1 AGONIST AND APPLICATION THEREOF
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, (2021/10/02)
The present invention relates to a class of tricyclic compounds and an application thereof as a sphingosine 1-phosphate type 1 (S1P1) receptor agonist. The invention specifically relates to a compound represented by formula (II), and a tautomer and pharmaceutically acceptable salt of same.
Enantioselective Synthesis of Chiral Indane Derivatives by Rhodium-Catalyzed Addition of Arylboron Reagents to Substituted Indenes
Umeda, Moeko,Noguchi, Hikaru,Nishimura, Takahiro
, p. 9597 - 9602 (2020/12/21)
Rhodium-catalyzed asymmetric addition of arylboron reagents to indene derivatives proceeded to give 2-arylindanes in good yields with high enantioselectivity. Deuterium-labeling experiments indicated that the present reaction involved a 1,4-Rh shift from an initially formed benzylrhodium to an arylrhodium intermediate before protonation leading to the corresponding addition product. The asymmetric addition was also successful for acenaphthylene, which has a similar skeleton to indene, where it was found that the benzylrhodium intermediate underwent direct protonation without the 1,4-Rh shift.
BRIDGED BIS(INDENYL) TRANSITIONAL METAL COMPLEXES, PRODUCTION, AND USE THEREOF
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, (2015/07/07)
The invention relates to a novel group bridged metallocene transition metal complexes, wherein the complex includes at least one indenyl ligand substituted at the 4- position with a phenyl group, the 4-phenyl group being preferably substituted at the 3 ', 4', and 5' positions with particular combinations of substituents, particularly wherein the 4'- substituent is a group of the formula (XR'n)-, wherein X is a Group 14-17 heteroatom having an atomic weight of 13 to 79 and R' is one of a hydrogen atom, halogen atom, a C1-C10 alkyl group, or a C6-C10 aryl group and n is 0, 1, 2, or 3. Catalyst systems including the transition metal complex, polymerization processes using the transition metal complex, and polymers made using the transition metal complex are also described.