Familial Aggregation of 7-Year Changes in Musculoskeletal Fitness
摘要:
The purpose of this study was to determine the degree of familial resemblance in baseline and 7-year changes in musculoskeletal fitness. Data front the 1981 Canada Fitness Survey and the Campbell's Survey 7-year follow-up were used. The sample consisted of 1264 people (635 males and 629 females) between the ages of 7 and 69 years for whom measurements of musculoskeletal fitness were available at baseline. A subsample of 834 people had measurements at both baseline and 7-year follow-up. Sit-and-reach trunk flexibility, number of push-ups without time limit, number of sit-ups in 60 seconds, and hand-grip strength were used as indicators of musculoskeletal fitness. The data were adjusted for the effects of age and body mass index (and baseline level of the variable for changes) by using regression procedures, and they were standardized to zero mean and unit variance within each of the four sex-by-generation groups (fathers, mothers, sons, and daughters), Familial correlation models were fitted to the data by using the computer software SEGPATH. The results indicate significant familial resemblance for all indicators of musculoskeletal fitness for baseline measures and 7-year changes. The heritabilities, or the percentages of the total variance attributable to heredity, were 64% for trunk flexibility, 37% for push-ups, 59% for sit-ups, and 48% for grip strength. Similarly, heritabilities for the change scores were 48% for trunk flexibility, 52% for push-ups, 41% for sit-ups, and 32% for grip strength. The results suggest that familial, and perhaps genetic, factors are important in explaining the variance in musculoskeletal fitness not only cross-sectionally but also for changes over time.
Synthesis of quinazolin-4(3H)-ones via electrochemical decarboxylative cyclization of α‑keto acids with 2-aminobenzamides
作者:Qing Tian、Jinli Zhang、Liang Xu、Yu Wei
DOI:10.1016/j.mcat.2020.111345
日期:2021.1
Abstract Herein, an environmentally benign electrochemical protocol has been disclosed for the synthesis of quinazolin-4(3H)-one derivatives from readily available α‑keto acids and 2-aminobenzamides. This decarboxylative cyclization process proceeds conveniently in the absence of any homogeneous metal catalysts, bases, or external oxidants. This protocol also features CO2 by-products, mild reaction
摘要 本文公开了一种环境友好的电化学方案,用于从容易获得的 α-酮酸和 2-氨基苯甲酰胺合成 quinazolin-4(3H)-one 衍生物。这种脱羧环化过程在没有任何均相金属催化剂、碱或外部氧化剂的情况下方便地进行。该协议还具有 CO2 副产物、温和的反应条件(室温和空气气氛)和广泛的底物范围,包括一系列 2,3-二取代喹唑啉酮产品。
[EN] 2-(2-CHLORO-4-METHYLPHENYL)QUINAZOLINE-4(3H)-KETONE COMPOUND AND MEDICAL USE THEREOF<br/>[FR] COMPOSÉ DE 2-(2-CHLORO-4-MÉTHYLPHÉNYL)QUINAZOLINE-4(3H)-CÉTONE ET SON UTILISATION MÉDICALE<br/>[ZH] 2-(2-氯-4-甲基苯基)喹唑啉-4(3H)-酮类化合物及其医药用途
申请人:INST OF PHARMACOLOGY AND TOXICOLOGY ACADEMY OF MILITARY MEDICAL SCIENCES
Iron-Catalyzed One-Pot 2,3-Diarylquinazolinone Formation from 2-Nitrobenzamides and Alcohols
作者:Huamin Wang、Xiangxiang Cao、Fuhong Xiao、Saiwen Liu、Guo-Jun Deng
DOI:10.1021/ol402350x
日期:2013.9.20
A novel approach for the synthesis of 2,3-diarylquinazolinones using iron as catalyst is described. Various 2-nitro-N-arylbenzamides reacted with benzylic alcohols to selectively give the corresponding products in the absence of external oxidant or reductant.
Hemalatha; Kumar, M. Suresh; Girija, Indian Journal of Heterocyclic Chemistry, 2014, vol. 24, # 1, p. 35 - 40