Laparoscopic Surgery for Endometriosis: A Long Term Follow-Up
摘要:
AbstractObjective: To investigate if complete resolution of endometriosis by laparoscopic surgery is beneficial to postoperative fecundity, dysmenorrhea and dyspareunia.Design: An observational comparative study on the outcome of laparoscopic surgery.Patients: Laparoscopically‐treated symptomatic women with endometriosis (total n = 236); complete (n = 185) and incomplete (n = 51) surgery groups.Measurements: Postoperative fecundity and symptom reduction.Results: With whole populations, no surgical completeness‐related difference was observed in cumulative pregnancy rates during the postoperative days 0–400 (cycle fecundity rate = 0.0319). Further accumulation of pregnant cases was followed in the complete surgery group (final cumulative pregnancy rate = 80%), but not in the counterpart group (p = 0.003). The similar result was obtained when only r‐AFS classification stages III and IV were compared (p = 0.007). No r‐AFS stage‐related difference was observed in cumulative pregnancy rates when only patients of complete surgery were selected for comparison. The surgery reduced dysmenorrhea (84.7%) and dyspareunia (80.0%).Conclusions: Laparoscopic conservative surgery for endometriosis, especially when it is complete, increases fecundity and reduces disease‐related symptoms, such as dysmenorrhea and dyspareunia.
The nucleophilic reactivity of organophosphorus compounds. Part 4. The alkylation of phosphorus acid anions with 'onium keten acetals
作者:Alexander T. Zaslona、C. Dennis Hall
DOI:10.1039/p19810003059
日期:——
The preparations of phosphonium and pyridinium ketenacetals are reported and their reactions with a variety of phosphorusacidanions are described. The novel pyridinium ketenacetals are useful reagents for the alkylation of various acidanions in aprotic, aqueous and aqueous-emulsion media.
Structural Determination, DFT Calculation, and Formation Mechanism of Ethyl 2-Cyano-3-alkoxypent-2-enoates Synthesized via Ru-Mediated Coupling Reaction between α,β-Unsaturated Acetals and Cyanoacetate
作者:Hidetake Seino、Takumi Kondo、Chihiro Mochizuki、Ken Tokunaga、Motowo Yamaguchi、Mitsunobu Sato
DOI:10.1246/bcsj.20160279
日期:2017.1.15
synthesized in moderate yields via the coupling reaction between α,β-unsaturated acetals and cyanoacetate, catalyzed by [RuHCl(CO)(PPh3)3]. The E- and Z-isomers were separated and determined by X-ray crystallography for the first time. Structural distortion associated with steric hindrance around the tetrasubstituted alkene moiety was revealed: e.g., the C(carbonyl)–C(α)–C(β) angle expands to about 125°
[EN] HETEROARYLS AND THEIR USE AS PI3K INHIBITORS<br/>[FR] HÉTÉROARYLES ET APPLICATIONS ASSOCIÉES
申请人:MILLENNIUM PHARM INC
公开号:WO2010090716A1
公开(公告)日:2010-08-12
This invention provides compounds of formula (IA) or (IB): wherein R1, R2, G1 and HY are as described in the specification. The compounds are inhibitors of PI3K and/or mTor and are thus useful for treating proliferative, inflammatory, or cardiovascular disorders.
High pressure promoted (2+2) cycloadditions of ketene acetals with carbonyl compounds
作者:René W.M. Aben、Hans W. Scheeren
DOI:10.1016/s0040-4039(00)85970-5
日期:1983.1
Cycloadditions of ketene acetals (R1R2C=C(OR)2) with carbonylcompounds (R3COR4) are strongly promoted by increase or pressure. At 12 kbar oxetanes are even obtained from very polar ketene acetals (R1,R2=H,H or H,Cl) and - in the presence of a Lewis acid - with unactivated ketones (R3 and R4 = alkyl). The reaction proceeds via a cisoid dipolar transition state; when relevant mainly trans-substituted
通过增加或加压,可大大促进乙烯酮缩醛(R 1 R 2 C = C(OR)2)与羰基化合物(R 3 COR 4)的环加成反应。在12kbar下,甚至从极极性的乙烯酮缩醛(R 1,R 2= H,H或H,Cl)和在路易斯酸存在下由未活化的酮(R 3和R 4=烷基)获得氧杂环丁烷。该反应通过一个cisoid偶极过渡态进行。当相关时,主要形成反式取代的氧杂环丁烷。
2,2-Di(ethoxy)vinyllithium: A synthetic equivalent of the ethyl acetate anion
作者:Heng-xu Wei、Manfred Schlosser
DOI:10.1016/0040-4039(96)00416-9
日期:1996.4
2,2-Diethoxyvinyllithium can be readily generated from 2-bromo-1,1-diethoxyethylene by treatment with butyllithium. When dissolved in tetrahydrofuran, it can be stored at −25 °C for hours, but decomposes rapidly at 0 °C.