|
1
|
Kim DS, Yoshizawa K, Mitasev B, Schnaderbeck M, Zhang H, Omori M, Kayano A, Nagai M, Wakasugi K, Watanabe Y, Benayoud F, Suzuki Y, Motoki T, Kaneko T, Takaishi M, Ishida T, Takeda K, Kita Y, Yamamoto N, Khan A, Dimopoulos P, Farthing CN, Hall A, Chanda A, Lu L, Bracke M, Fang FG. Synthesis of BACE1 Inhibitors E2609/ E2071 via Oxime–Olefin Cycloaddition Following a Process Risk Mitigation Strategy. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.1c00223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Dae-Shik Kim
- Eisai Incorporated, 35 Cambridgepark Drive, Cambridge, Massachusetts 02140, United States
| | - Kazuhiro Yoshizawa
- API Research Japan, Pharmaceutical Science & Technology Core Function Units, Medicine Creation Center, Eisai Company, Limited, 22-Sunayama, Kamisu-shi, Ibaraki 314-0255, Japan
| | - Branko Mitasev
- Eisai Incorporated, 35 Cambridgepark Drive, Cambridge, Massachusetts 02140, United States
| | - Matthew Schnaderbeck
- Eisai Incorporated, 35 Cambridgepark Drive, Cambridge, Massachusetts 02140, United States
| | - Huiming Zhang
- Eisai Incorporated, 35 Cambridgepark Drive, Cambridge, Massachusetts 02140, United States
| | - Masayuki Omori
- API Research Japan, Pharmaceutical Science & Technology Core Function Units, Medicine Creation Center, Eisai Company, Limited, 22-Sunayama, Kamisu-shi, Ibaraki 314-0255, Japan
| | - Akio Kayano
- API Research Japan, Pharmaceutical Science & Technology Core Function Units, Medicine Creation Center, Eisai Company, Limited, 22-Sunayama, Kamisu-shi, Ibaraki 314-0255, Japan
| | - Mitsuo Nagai
- API Research Japan, Pharmaceutical Science & Technology Core Function Units, Medicine Creation Center, Eisai Company, Limited, 22-Sunayama, Kamisu-shi, Ibaraki 314-0255, Japan
| | - Kazunori Wakasugi
- API Research Japan, Pharmaceutical Science & Technology Core Function Units, Medicine Creation Center, Eisai Company, Limited, 22-Sunayama, Kamisu-shi, Ibaraki 314-0255, Japan
| | - Yuzo Watanabe
- API Research Japan, Pharmaceutical Science & Technology Core Function Units, Medicine Creation Center, Eisai Company, Limited, 22-Sunayama, Kamisu-shi, Ibaraki 314-0255, Japan
| | - Farid Benayoud
- Eisai Incorporated, 35 Cambridgepark Drive, Cambridge, Massachusetts 02140, United States
| | - Yuichi Suzuki
- Neurology Business Group Eisai Tsukuba Research Laboratories, Tokodai, 5-1-3 Tsukuba-shi, Ibaraki 300-2635, Japan
| | - Takafumi Motoki
- Neurology Business Group Eisai Tsukuba Research Laboratories, Tokodai, 5-1-3 Tsukuba-shi, Ibaraki 300-2635, Japan
| | - Toshihiko Kaneko
- Neurology Business Group Eisai Tsukuba Research Laboratories, Tokodai, 5-1-3 Tsukuba-shi, Ibaraki 300-2635, Japan
| | - Mamoru Takaishi
- Neurology Business Group Eisai Tsukuba Research Laboratories, Tokodai, 5-1-3 Tsukuba-shi, Ibaraki 300-2635, Japan
| | - Tasuku Ishida
- Neurology Business Group Eisai Tsukuba Research Laboratories, Tokodai, 5-1-3 Tsukuba-shi, Ibaraki 300-2635, Japan
| | - Kunitoshi Takeda
- Neurology Business Group Eisai Tsukuba Research Laboratories, Tokodai, 5-1-3 Tsukuba-shi, Ibaraki 300-2635, Japan
| | - Yoichi Kita
- Neurology Business Group Eisai Tsukuba Research Laboratories, Tokodai, 5-1-3 Tsukuba-shi, Ibaraki 300-2635, Japan
| | - Noboru Yamamoto
- Eisai Europe Limited, EMEA Knowledge Centre, Mosquito Way, Hatfield Hertfordshire AL10 9SN, United Kingdom
| | - Afzal Khan
- Eisai Europe Limited, EMEA Knowledge Centre, Mosquito Way, Hatfield Hertfordshire AL10 9SN, United Kingdom
| | - Paschalis Dimopoulos
- Eisai Europe Limited, EMEA Knowledge Centre, Mosquito Way, Hatfield Hertfordshire AL10 9SN, United Kingdom
| | - Christopher N. Farthing
- Eisai Europe Limited, EMEA Knowledge Centre, Mosquito Way, Hatfield Hertfordshire AL10 9SN, United Kingdom
| | - Adrian Hall
- Eisai Europe Limited, EMEA Knowledge Centre, Mosquito Way, Hatfield Hertfordshire AL10 9SN, United Kingdom
| | - Arani Chanda
- Eisai Incorporated, 35 Cambridgepark Drive, Cambridge, Massachusetts 02140, United States
| | - Lily Lu
- Eisai Incorporated, 35 Cambridgepark Drive, Cambridge, Massachusetts 02140, United States
| | - Markus Bracke
- Eisai Incorporated, 35 Cambridgepark Drive, Cambridge, Massachusetts 02140, United States
| | - Francis G. Fang
- Eisai Incorporated, 35 Cambridgepark Drive, Cambridge, Massachusetts 02140, United States
| |
Collapse
|
|
4
|
Jiang X, Chen W, Hartwig JF. Iridium-Catalyzed Diastereoselective and Enantioselective Allylic Substitutions with Acyclic α-Alkoxy Ketones. Angew Chem Int Ed Engl 2016; 55:5819-23. [PMID: 27038004 DOI: 10.1002/anie.201600235] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Indexed: 01/27/2023]
Abstract
The asymmetric alkylation of acyclic ketones is a longstanding challenge in organic synthesis. Reported herein are diastereoselective and enantioselective allylic substitutions with acyclic α-alkoxy ketones catalyzed by a metallacyclic iridium complex to form products with contiguous stereogenic centers derived from the nucleophile and electrophile. These reactions occur between allyl methyl carbonates and unstabilized copper(I) enolates generated in situ from acyclic α-alkoxy ketones. The resulting products can be readily converted into enantioenriched tertiary alcohols and tetrahydrofuran derivatives without erosion of enantiomeric purity.
Collapse
Affiliation(s)
- Xingyu Jiang
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA.,Division of Chemical Sciences, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Wenyong Chen
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA.,Division of Chemical Sciences, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - John F Hartwig
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA. .,Division of Chemical Sciences, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
| |
Collapse
|