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生技霉素是一组４＂－酰化螺旋霉素，继从生技霉素产生菌发酵液中分离到主要组分生技霉素Ａ和Ｂ之后，利用两相分配及柱层析的分离方法，又分离到分子量为９６８的化合物生技霉素Ａ２。根据其ＵＶ、ＩＲ、ＦＡＢ－ＭＳ、１Ｈ－ＮＭＲ、１３Ｃ－ＮＭＲ、ＤＥＰＴ谱、１Ｈ－１ＨＣＯＳＹ的分析及与４＂－异戊酰螺旋霉素Ⅲ（即生技霉素Ａ）光谱数据的比较表明生技霉素Ａ２含分子式皆为Ｃ５０Ｈ８４Ｎ２Ｏ１６的４＂－异丁酰螺旋霉素Ⅲ（生技霉素Ａ２β）和４＂－丁酰螺旋霉素Ⅲ（生技霉素Ａ２α）。生技霉素Ａ２碱水解产物中游离脂肪酸的气相色谱及ＧＣ－ＭＳ分析支持了以上结论。
The biotin is a group of 4 “acylated spiramycin, following the separation of the major components of the biomomycin A and B from the fermentation broth of the biotechmycin producing bacterium, using two-phase partitioning and column chromatography Separation method, and the compound was also isolated to the molecular weight of 968 ADM2. According to its UV, IR, FAB-MS, 1H-NMR, 13C-NMR, DEPT spectrum, 1H-1HCOSY analysis and 4 ” A comparison of the spectral data for acyclovir III (ie, biochemomycin A) shows that biochem.mycin A2 contains 4 “-isobutyryl spiramycin III (biochemcimycin A2β) and 4” -isomer of the formula C50H84N2O16, Butyrylospiromycin III (biochemcimycin A2α). Gas chromatography and GC-MS analysis of free fatty acids in the biologically hydrolyzed product of biochemcimin A2 supported these conclusions.