Photoinduced electron transfer cyclizations of aryl-linked phthalimides
摘要:
The photochemistry photochemistry of arene-linked phthalimides incorporating the carboxylate or thioether donor group was investigated. Simple N-phthalimidophenyl alkanoates exclusively gave photoreduction (CO2H/H-exchange) products. In contrast, omega-phthalimido-meta-phenoxy carboxylates underwent photodecarboxylative cyclizations in yields of 6-48%. Likewise, catechol-linked derivatives furnished analogue cyclization products in 18-38% yield. Using the photodecarboxylation protocol, macrocyclic target compounds with ring sizes up to 17 could thus be realized. Two model phthalimides containing a thioether branch at the ortho-position of the arene-linker gave the analogue seven-membered cyclization products in yields of 28% and 35%, respectively. (C) 2011 Elsevier Ltd. All rights reserved.
Inhibitors of the renal outer medullary potassium channel
申请人:Tang Haifeng
公开号:US09073882B2
公开(公告)日:2015-07-07
This invention relates to compounds having structural Formula I:
and pharmaceutically acceptable salts thereof which are inhibitors of the Renal Outer Medullary Potassium (ROMK) channel (Kir1.1). The compounds of Formula I are useful as diuretics and natriuretics and therefore are useful for the therapy and prophylaxis of disorders resulting from excessive salt and water retention, including cardiovascular diseases such as hypertension and chronic and acute heart failure.