Bobby Fischer created a stir when he switched to it from his customary 1.e4 late in his career, employing it against Lev Polugaevsky and Oscar Panno at the Palma de Mallorca Interzonal in 1970, and in his world championship match against Boris Spassky.

2024年4月15日 · 构象对映异构体，一般端基碳取代基为直立键的为优势构象。

What is The English Opening? The English is a chess Opening that happens after the move 1.c4 and can lead to both classical and modern positions. The English happens after White moves …

2024年12月25日 · SULT1C4 (Sulfotransferase Family 1C Member 4) is a Protein Coding gene. Diseases associated with SULT1C4 include Macular Dystrophy, Corneal and Stromal Dystrophy. Among its related pathways are Metapathway biotransformation Phase I and II and Cytosolic sulfonation of small molecules.

1996年7月19日 · These studies address questions re- lated to the stability of hydroxyl and hydroxymethyl rotamers, the ring conformation, the structural and energetic consequences of anomeric effect, and sol- vation effects.

2025年1月4日 · The English Opening, which starts with 1.c4, is the fourth most commonly played opening move in chess. By playing this move, White allows the queen to move freely and also discourages Black from responding with 1...d5. Additionally, White ensures that the c-pawn will not be blocked behind a knight on c3.

2018年6月2日 · Let's fast forward 167 years to see how world champion challenger Fabiano Caruana defeats former World Champion Viswanathan Anand using the English Opening. Fabiano Caruana played the English Opening in an aggressive and direct way.

Like cyclohexane, the 6–membered ring of monosaccharides also exists in two isomeric chair conformations, which are specified as 1C4 and 4C1, respectively, where the letter C stands for 'chair' and the numbers indicate the carbon atoms located above or below the reference plane of the chair, made up by C–2, C–3, C–5 and the ring oxygen.

磺基转移酶家族 1C 成员 4： 磺基转移酶催化许多激素、神经递质、药物和异生化合物的硫酸盐结合。 这些胞质酶的组织分布和底物特异性不同。 家族成员之间的基因结构 (外显子的数量和长度) 相似。 该基因编码属于 SULT1 亚家族的蛋白质，负责将磺基部分从 PAPS 转移到含酚化合物。 [RefSeq 提供，2008 年 7 月]

2008年9月23日 · 最近实验遇到种种麻烦，好不容易做出一个寡糖出来，却发现核心阿拉伯糖的构象是 4 C 1 的。 怎样才能把它转化成 4 C 1 呢？ （我也不知道哪种是优势构象） 了！ 这个决定于化合物的本性吧？ 不是人工的结果。 这个决定于化合物的本性吧？ 不是人工的结果。 先把糖环解开，然后再合上，位阻大的影响就成4C1了。 我做的是天然产物的合成。 天然产物中是4C1，我合成出来却是1C4。 先把糖环解开，然后再合上，位阻大的影响就成4C1了。 呵呵，要翻转好 …