Reaction Control in Synthetic Organic Photochemistry: Switching between [5+2] and [2+2] Modes of Cycloaddition
作者:Claudio Roscini、Kara L. Cubbage、Malcolm Berry、Andrew J. Orr-Ewing、Kevin I. Booker-Milburn
DOI:10.1002/anie.200904059
日期:2009.11.2
Split personality: Reaction conditions that enable powerful control over the mode of photocycloaddition in maleimides have been developed. Direct irradiation favors the [5+2] mode whereas sensitized irradiation allows a complete switch to the [2+2] mode (see scheme; TBS=tert‐butyldimethylsilyl).
Macrocyclic purines for the treatment of viral infections
申请人:Janssen Sciences Ireland UC
公开号:US10280180B2
公开(公告)日:2019-05-07
This invention relates macrocyclic purine derivatives, processes for their preparation, pharmaceutical compositions, and their use in treating viral infections.
本发明涉及大环嘌呤衍生物、其制备工艺、药物组合物及其在治疗病毒感染中的用途。
MACROCYCLIC PURINES FOR THE TREATMENT OF VIRAL INFECTIONS
申请人:Janssen Sciences Ireland UC
公开号:EP2872515B1
公开(公告)日:2016-06-08
Golf ball layers formed of polyurethane-based and polyurea-based compositions incorporating block copolymers
申请人:——
公开号:US20040262808A1
公开(公告)日:2004-12-30
Golf equipment having improved cut and shear resistance that includes a polyurea-based composition or polyurethane-based composition, preferably saturated and/or water resistant, formed of a prepolymer, a functionalized block copolymer, and optionally further cured or chain extended with a curing agent, where the prepolymer is incorporated at the terminal end of the functionalized block copolymer.
Golf Ball Layers Formed of Polyurethane-Based and Polyurea-Based Compositions Incorporating Block Copolymers
申请人:Wu Shenshen
公开号:US20090137342A1
公开(公告)日:2009-05-28
A golf ball including a core and a cover, wherein cover is formed from a composition comprising the reaction product of a prepolymer including a soft-segment comprising an amine-terminated polyether and a hard segment including a uretdione of hexamethylene diisocyanate; and an amine-terminated curing agent; wherein the amine-terminated polyether has the structure:
where x and z have a combined value of 3.6-8 and y is 9-50, R is an alkyl group having 1-20 carbons, a phenyl group, a cyclic group, or mixtures thereof, R
1
is —(CH
2
)
a
—, where a is 1-10, a phenylene group, a cyclic group, or a mixture thereof, and R
3
is hydrogen, a methyl group, or a mixture thereof.