The reaction of propargylic alcohols with diaryl disulfides and carbon monoxide in the presence of tetrakis(triphenylphosphine)palladium leads to a novel thiolative lactonization to afford beta-(arylthio)-alpha,beta-unsaturated lactones in moderate to good yields. Similar conditions can be employed with homopropargylic alcohols, giving the corresponding delta-lactones with a beta-arylthio group successfully
Diels–Alder and Stille Coupling Approach for the Short Protecting-Group-Free Synthesis of Mycophenolic Acid, Its Phenylsulfenyl and Phenylselenyl Analogues, and Reactive Oxygen Species (ROS) Probing Capacity in Water
作者:Mahesh B. Halle、Tesla Yudhistira、Woo-Hyun Lee、Sandip V. Mulay、David G. Churchill
DOI:10.1021/acs.orglett.8b01327
日期:2018.6.15
Stille cross-coupling approach includes key transformations, allowing for a competitive synthesis which involves a rare halophenol Stille cross-coupling study. The phenylselenyl and phenylsulfenyl analogues were prepared as novel compounds in good overall yield. The applicability of one of the intermediates as a potential probe for reactive oxygen species (ROS) in water is investigated.
申请人:Korea Advanced Institute of Science and Technology 한국과학기술원(319980988661) BRN ▼314-82-01980
公开号:KR20200079919A
公开(公告)日:2020-07-06
본 발명은 마이코페놀산, 이의 페닐설페닐 및 페닐셀레닐 유도체 화합물의 합성방법, 상기 합성방법에 의해 합성된 신규한 마이코페놀산의 페닐설페닐 또는 페닐셀레닐 유도체 화합물에 관한 것이다. 본 발명의 새로운 마이코페놀산의 합성방법은 종래 합성방법과 비교하여 보호기를 사용하지 않으며 반응단계가 간단하고 높은 수득율을 갖는다. 따라서, 본 발명의 합성방법은 마이코페놀산을 높은 수율의 대량생산 방법에 유용하게 사용될 수 있다.