Table 1 MS and MS2 data of laetiporic acid pairs A1/A2–D1/D2

From: The Laetiporus polyketide synthase LpaA produces a series of antifungal polyenes

Compound

tR (min)

Formula

Neutral mass [M]

Found parental ion [M + H]+

MS2 specific ions

Ion mass

Formula

Origin

LA-A1/A2

4.7/4.9

C27H32O4

420.2301

421.2374/421.2371

403.227

C27H31O3

[M-H2O + H]+

385.216

C27H29O2

[M-2 H2O + H]+

359.236

C26H31O

[M-H2O-CO2 + H]+

343.190

C21H27O4

[M-C6H6 + H]+

245.132

C19H17

[M-C8H8-H8O4 + H]+

219.117

C17H15

[M-C10H10-H8O4 + H]+

193.101

C15H13

[M-C12H12-H8O4 + H]+

131.086

C10H11

[C10H10 + H]+

109.065

C7H10O

[C7H9O + H]+

105.070

C8H9

[C8H8 + H]+

79.054

C6H7

[C6H6 + H]+

LA-B1/B2

5.1/5.3

C29H34O4

446.2457

447.2524/447.2524

429.242

C29H33O3

[M-H2O + H]+

411.231

C29H31O2

[M-2 H2O + H]+

369.204

C23H29O4

[M-C6H6 + H]+

351.195

C23H27O3

[M-C6H6-H2O + H]+

312.172

C20H24O3

[M-C9H9-H2O + H]+

271.148

C21H19

[M-C8H8-H8O4 + H]+

245.132

C19H17

[M-C10H10-H8O4 + H]+

219.117

C17H15

[M-C12H12-H8O4 + H]+

193.101

C15H13

[M-C14H14-H8O4 + H]+

131.086

C10H11

[C10H10 + H]+

109.065

C7H10O

[C7H9O + H]+

105.070

C8H9

[C8H8 + H]+

79.054

C6H7

[C6H6 + H]+

LA-C1/C2

5.7/5.9

C31H36O4

472.2614

473.2686/473.2687

455.258

C31H35O3

[M-H2O + H]+

395.219

C25H31O4

[M-C6H6 + H]+

338.188

C22H26O3

[M-C9H9-H2O + H]+

245.132

C19H17

[M-C12H12-H8O4 + H]+

219.117

C17H15

[M-C14H14-H8O4 + H]+

193.101

C15H13

[M-C16H16 -H8O4 + H]+

131.086

C10H11

[C10H10 + H]+

109.065

C7H10O

[C7H9O + H]+

105.070

C8H9

[C8H8 + H]+

79.054

C6H7

[C6H6 + H]+

LA-D1

6.2

C33H38O4

498.2770

499.2844

481.2742

C33H37O3

[M-H2O + H]+

421.2373

C27H33O4

[M-C6H6 + H]+

364.203

C24H28O3

[M-C9H9-H2O + H]+

297.163

C23H21

[M-C10H10-H8O4 + H]+

219.117

C17H15

[M-C16H16-H8O4 + H]+

193.101

C15H13

[M-C18H18-H8O4 + H]+

131.086

C10H11

[C10H10 + H]+

109.065

C7H10O

[C7H9O + H]+

105.070

C8H9

[C8H8 + H]+

79.054

C6H7

[C6H6 + H]+

LA-D2

6.4

C33H38O4

498.2770

499.2832

not determined.