Five new diterpenes were isolated from Euphorbia sieboldiana and identified as atis-16-en-13(S)-hydroxy-3,14-dione(Ⅰ),atis-16-en- 14-oxo-13(S),3 β-diol(Ⅱ),atisane-3-oxo-16α,17-diol(Ⅳ),atisane-3β ,16α,17-triol(...Five new diterpenes were isolated from Euphorbia sieboldiana and identified as atis-16-en-13(S)-hydroxy-3,14-dione(Ⅰ),atis-16-en- 14-oxo-13(S),3 β-diol(Ⅱ),atisane-3-oxo-16α,17-diol(Ⅳ),atisane-3β ,16α,17-triol(Ⅴ)and atisane-3β-acetyl-16α,17-diol(Ⅵ)based on the chemical,spectral evidences and X-ray diffraction.展开更多
The term of office shifting National two sessions in 2018, the First Session of the 13th National People's Congress (NPC) and the First Session of the National Committee of Chinese People's Political Consultative ...The term of office shifting National two sessions in 2018, the First Session of the 13th National People's Congress (NPC) and the First Session of the National Committee of Chinese People's Political Consultative Conference (CPPCC) were held at a new historical juncture for China's development. It was described by the international public opinions as "the first two sessions since the 19th Communist Party of China(CPC) National Congress declaring China's entry into a new era", marking "the most important moment for China in 2o18" and having extraor- dinary significance and far-reaching impact.展开更多
文摘Five new diterpenes were isolated from Euphorbia sieboldiana and identified as atis-16-en-13(S)-hydroxy-3,14-dione(Ⅰ),atis-16-en- 14-oxo-13(S),3 β-diol(Ⅱ),atisane-3-oxo-16α,17-diol(Ⅳ),atisane-3β ,16α,17-triol(Ⅴ)and atisane-3β-acetyl-16α,17-diol(Ⅵ)based on the chemical,spectral evidences and X-ray diffraction.
文摘The term of office shifting National two sessions in 2018, the First Session of the 13th National People's Congress (NPC) and the First Session of the National Committee of Chinese People's Political Consultative Conference (CPPCC) were held at a new historical juncture for China's development. It was described by the international public opinions as "the first two sessions since the 19th Communist Party of China(CPC) National Congress declaring China's entry into a new era", marking "the most important moment for China in 2o18" and having extraor- dinary significance and far-reaching impact.