DMP-mediated one-pot oxidative olefination of silyl ethers
摘要:
Silyl ethers of arylic, allylic, propargylic and unactivated alcohols could be deprotected and oxidized with Dess-Martin periodinane, and the resulting aldehydes could be directly converted to the corresponding alpha,beta-unsaturated esters in one pot with stabilized phosphoranes. Good selectivities were achieved upon a variety of protecting groups of alcohol by using this method. Other advantages of the protocol included simplicity of operations and high efficiency, as well as good to excellent yields. (c) 2005 Elsevier Ltd. All rights reserved.
MEDICAL DEVICES INCORPORATING FUNCTIONAL ADHESIVES
申请人:Covidien LP
公开号:US20140303432A1
公开(公告)日:2014-10-09
A method for treating a wound or defect at a surgical target site using a minimally invasive surgical procedure is provided which includes utilizing a surgical access device such as a port or a catheter having a plurality of reactive members of a specific binding pair releasably contained on a surface of the access device, the reactive members having affinity for binding a cellular component of tissue cells located at the target site; contacting the surface of the access device with the tissue cells, wherein upon contact of the reactive members on the surface of the access device with the tissue cells, the reactive members are released from the surface of the access device and bind to the tissue; providing a tissue repair member having secured thereto a plurality of complementary reactive members of the specific binding pair; and applying the tissue repair member to the tissue, wherein upon contact of the complementary reactive members on the surface of the tissue repair member with the reactive members on the tissue, covalent bonds are formed between the reactive members and the complementary reactive members, thus bonding the tissue repair member to the tissue. A surgical access device for use in minimally invasive surgery is provided which includes a plurality of reactive members of a specific binding pair releasably contained on a surface of the access device, the reactive members having an affinity for binding a cellular component of tissue cells and another affinity for binding complementary members of the specific binding pair.