1.
Selective oxidation of betulin for betulinic acid preparation
非金属选择性催化氧化桦木醇制备桦木酸
2.
Preliminary Study on Betulinic Acid and Betulin Derivatives' Anti-cancer Acitivity and Mechanism in Inducing Cell Apoptosis
桦木酸及桦木醇衍生物抗癌活性和诱导凋亡机理初步研究
3.
Synergism of Ginsenoside Rh2 and Betulinic Acid to Induce Apoptosis in Tumor Cells;
人参皂甙Rh2和桦木酸协同诱导肿瘤细胞凋亡的研究
4.
The Construction of Similar D/E Ring Moiety of Betulinic Acid on Steroidal Scaffold via Diels-Alder Reaction and Preliminary Bioactivity Test;
经Diels-Alder加成建立桦木酸D/E环甾体类似结构及生物活性的初步探索
5.
Design, Synthesis and Bioactivity Research of Steroidal Betulinic Acid Analogues with E Hetero-rings
具有E杂环的甾体结构的桦木酸结构类似物的设计、合成及生物活性研究
6.
Synthesis and solubility comparison of 3,28-Di-O-acylated betulin derivatives
桦木醇二酸酯衍生物的合成及溶解性能比较
7.
Synthesis of 3,28-Di-O-glutaryl-betulin and Analysis of Its Solubility Properties
桦木醇戊二酸酯的合成及溶解性能分析
8.
a genus of trees of the family Betulaceae (such as birches).
桦木科的一个乔木属（例如桦树）。
9.
carbonated drink flavored with an extract from sarsaparilla root or with birch oil and sassafras.
用菝葜根提取物或白桦油和擦木调味的碳酸饮料。
10.
Influences of Betulonic Acid on HepG-2 Cell and Mice Bearing H_(22) Tumor Cells
桦木酮酸对人肝癌细胞及对动物移植性肿瘤H_(22)细胞的影响
11.
The reality wood flat floor takes wood assortments such as birch, oak wood, elm, color wood as raw material.
实木平板地板以桦木、木、木、木等材种为原材料。
12.
any betulaceous tree or shrub of the genus Betula having a thin peeling bark.
桦属的任何一种桦树或灌木,有薄的剥落的树皮。
13.
a smooth leather tanned with willow, birch, or oak, and scented on the flesh side with birch oil.
一种光滑的皮革，经过柳木、桦木、橡木硝制，内壁用桦树油加上香味。
14.
well-seasoned oak, birch, etc
充分风乾可用的栎木、 桦木等.
15.
alder: tree of the birch family,usu growing in marshy places
桤木（桦木科,通常生长于沼泽地带）.
16.
Research progress and foreground of betulin and betulinic acid
白桦脂醇、白桦脂酸的研究进展及其前景
17.
any shrub or tree of the genus Grevillea.
任何属于银桦属的灌木和树。
18.
He used a piece of birch to make a small boat.
他用一块桦木做一只小船。