A divergent strategy to the withasomnines.
نویسندگان
چکیده
A concise synthesis of three members of the withasomnine family of natural products is reported. The synthesis features a regioselective sydnone-alkynylboronate cycloaddition followed by Suzuki cross coupling and silyl group removal, and marks the first divergent approach to this family of pyrazole based natural products.
منابع مشابه
Survey the effect of drawing and implementing of concept map in a group method with a computer on the divergent thinking of nursing students
Introduction: Concept map is one of the effective methods in the evolution of medical education, which leads to the development of learning problem solving, group skills and creativity. The purpose of this study was to determine the effect of drawing and implementing of concept map in a group method with a computer on the divergent thinking of nursing students. Materials and methods: The presen...
متن کاملThe Impact of Divergent and Convergent Tasks on Iranian EFL Students’ Reading Comprehension Success
This study was an attempt to investigate the effect of divergent and convergent tasks on intermediate EFL students' reading comprehension success. The participants of this study involved sixty male and female EFL learners who were enrolled in the intermediate level at Kish English Institute in Yasuj. To make them homogeneous in terms of their general English knowledge, they were asked to take p...
متن کاملThe validity and reliability of the divergent thinking questionnaire among primary school students.
Introduction: Divergent thinking increases the ability of children to solve problems and provides them with a wealth of associations and possible solutions. The purpose of this study was to investigate the validity and reliability of the divergent thinking questionnaire among primary school students. Method: The statistical population included all 7-year-old students of public schools in Zaheda...
متن کاملهمگرایی و واگرایی سران قریش در برخورد با پیامبر(ص)
The political power of Mecca was on the verge of the Prophet (PBUH) being the monarchy of the aristocracy and tribal elders. Their confrontation with the advent of Islam and the mission of the Prophet (PBUH) brought different and even different reactions from the Makki politician. In some cases, they converged and interacted, adopted a common policy and strategy in dealing with the Prophet (PBU...
متن کاملDivergent selection for four-week body weight in Japanese quail (Coturnix coturnix japonica): response to selection and realized heritability
The Japanese quail has been utilized as a research species in establishing the genetic relationships that may also be present in other species. Divergent phenotypic selection for 4-wk BW was conducted for three generations in high (HW) and low (LW) lines. Within each line, 50 females and 25 males were selected among 600 birds, based on 4-wk BW. Mean BW at 4 wk of age in the base generation was ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Organic & biomolecular chemistry
دوره 7 19 شماره
صفحات -
تاریخ انتشار 2009